Home / 385,364,379.71-531,803,357.14-209,152,375.06

Finding the Fourth Proportional to 385,364,379.71, 531,803,357.14 and 209,152,375.06

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Solution

The fourth proportional to 385,364,379.71, 531,803,357.14 and 209,152,375.06 is: 288,630,556.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,364,379.71 : 531,803,357.14 = 209,152,375.06 : x
  2. Step 2: Convert to fraction form
    385,364,379.71/531,803,357.14 = 209,152,375.06/x
  3. Step 3: Cross multiply
    385,364,379.71x = 531,803,357.14 × 209,152,375.06
  4. Step 4: Simplify right side
    385,364,379.71x = 111,227,935,210,712,400
  5. Step 5: Solve for x
    x = 111,227,935,210,712,400/385,364,379.71
  6. Step 6: Final answer
    x = 288,630,556.08

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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.