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Finding the Fourth Proportional to 425,788,371.36, 638,678,299.22 and 134,655,543.72

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Solution

The fourth proportional to 425,788,371.36, 638,678,299.22 and 134,655,543.72 is: 201,981,969.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,788,371.36 : 638,678,299.22 = 134,655,543.72 : x
  2. Step 2: Convert to fraction form
    425,788,371.36/638,678,299.22 = 134,655,543.72/x
  3. Step 3: Cross multiply
    425,788,371.36x = 638,678,299.22 × 134,655,543.72
  4. Step 4: Simplify right side
    425,788,371.36x = 86,001,573,644,226,448
  5. Step 5: Solve for x
    x = 86,001,573,644,226,448/425,788,371.36
  6. Step 6: Final answer
    x = 201,981,969.05

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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.