Home / 398,309,176,423.42-549,668,319,546.80-215,406,278,068.26

Finding the Fourth Proportional to 398,309,176,423.42, 549,668,319,546.80 and 215,406,278,068.26

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Solution

The fourth proportional to 398,309,176,423.42, 549,668,319,546.80 and 215,406,278,068.26 is: 297,261,559,346.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,309,176,423.42 : 549,668,319,546.80 = 215,406,278,068.26 : x
  2. Step 2: Convert to fraction form
    398,309,176,423.42/549,668,319,546.80 = 215,406,278,068.26/x
  3. Step 3: Cross multiply
    398,309,176,423.42x = 549,668,319,546.80 × 215,406,278,068.26
  4. Step 4: Simplify right side
    398,309,176,423.42x = 118,402,006,885,611,192,975,360
  5. Step 5: Solve for x
    x = 118,402,006,885,611,192,975,360/398,309,176,423.42
  6. Step 6: Final answer
    x = 297,261,559,346.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.