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Finding the Fourth Proportional to 386,329,813.80, 579,494,720.70 and 232,896,892.20

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Solution

The fourth proportional to 386,329,813.80, 579,494,720.70 and 232,896,892.20 is: 349,345,338.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,329,813.80 : 579,494,720.70 = 232,896,892.20 : x
  2. Step 2: Convert to fraction form
    386,329,813.80/579,494,720.70 = 232,896,892.20/x
  3. Step 3: Cross multiply
    386,329,813.80x = 579,494,720.70 × 232,896,892.20
  4. Step 4: Simplify right side
    386,329,813.80x = 134,962,519,497,337,008
  5. Step 5: Solve for x
    x = 134,962,519,497,337,008/386,329,813.80
  6. Step 6: Final answer
    x = 349,345,338.30

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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.