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Finding the Fourth Proportional to 436,965,357.20, 655,448,035.80 and 178,039,428.80

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Solution

The fourth proportional to 436,965,357.20, 655,448,035.80 and 178,039,428.80 is: 267,059,143.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,965,357.20 : 655,448,035.80 = 178,039,428.80 : x
  2. Step 2: Convert to fraction form
    436,965,357.20/655,448,035.80 = 178,039,428.80/x
  3. Step 3: Cross multiply
    436,965,357.20x = 655,448,035.80 × 178,039,428.80
  4. Step 4: Simplify right side
    436,965,357.20x = 116,695,593,901,913,952
  5. Step 5: Solve for x
    x = 116,695,593,901,913,952/436,965,357.20
  6. Step 6: Final answer
    x = 267,059,143.20

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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.