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Finding the Fourth Proportional to 404,785.54, 607,132.14 and 138,511

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Solution

The fourth proportional to 404,785.54, 607,132.14 and 138,511 is: 207,750.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,785.54 : 607,132.14 = 138,511 : x
  2. Step 2: Convert to fraction form
    404,785.54/607,132.14 = 138,511/x
  3. Step 3: Cross multiply
    404,785.54x = 607,132.14 × 138,511
  4. Step 4: Simplify right side
    404,785.54x = 84,094,479,843.54
  5. Step 5: Solve for x
    x = 84,094,479,843.54/404,785.54
  6. Step 6: Final answer
    x = 207,750.70

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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.