Home / 385,349,086.71-577,894,085.15-139,654,280.04

Finding the Fourth Proportional to 385,349,086.71, 577,894,085.15 and 139,654,280.04

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Solution

The fourth proportional to 385,349,086.71, 577,894,085.15 and 139,654,280.04 is: 209,434,471.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,349,086.71 : 577,894,085.15 = 139,654,280.04 : x
  2. Step 2: Convert to fraction form
    385,349,086.71/577,894,085.15 = 139,654,280.04/x
  3. Step 3: Cross multiply
    385,349,086.71x = 577,894,085.15 × 139,654,280.04
  4. Step 4: Simplify right side
    385,349,086.71x = 80,705,382,400,299,424
  5. Step 5: Solve for x
    x = 80,705,382,400,299,424/385,349,086.71
  6. Step 6: Final answer
    x = 209,434,471.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.