Home / 256,243,513.30-384,430,814.43-74,490,691.30

Finding the Fourth Proportional to 256,243,513.30, 384,430,814.43 and 74,490,691.30

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Solution

The fourth proportional to 256,243,513.30, 384,430,814.43 and 74,490,691.30 is: 111,755,090.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,243,513.30 : 384,430,814.43 = 74,490,691.30 : x
  2. Step 2: Convert to fraction form
    256,243,513.30/384,430,814.43 = 74,490,691.30/x
  3. Step 3: Cross multiply
    256,243,513.30x = 384,430,814.43 × 74,490,691.30
  4. Step 4: Simplify right side
    256,243,513.30x = 28,636,517,123,912,716
  5. Step 5: Solve for x
    x = 28,636,517,123,912,716/256,243,513.30
  6. Step 6: Final answer
    x = 111,755,090.91

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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.