Home / 386,209,279.80-532,965,088.71-209,997,340.56

Finding the Fourth Proportional to 386,209,279.80, 532,965,088.71 and 209,997,340.56

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Solution

The fourth proportional to 386,209,279.80, 532,965,088.71 and 209,997,340.56 is: 289,794,308.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,209,279.80 : 532,965,088.71 = 209,997,340.56 : x
  2. Step 2: Convert to fraction form
    386,209,279.80/532,965,088.71 = 209,997,340.56/x
  3. Step 3: Cross multiply
    386,209,279.80x = 532,965,088.71 × 209,997,340.56
  4. Step 4: Simplify right side
    386,209,279.80x = 111,921,251,240,424,480
  5. Step 5: Solve for x
    x = 111,921,251,240,424,480/386,209,279.80
  6. Step 6: Final answer
    x = 289,794,308.67

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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.