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Finding the Fourth Proportional to 423,789.03, 635,613.68 and 139,483.28

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Solution

The fourth proportional to 423,789.03, 635,613.68 and 139,483.28 is: 209,201.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,789.03 : 635,613.68 = 139,483.28 : x
  2. Step 2: Convert to fraction form
    423,789.03/635,613.68 = 139,483.28/x
  3. Step 3: Cross multiply
    423,789.03x = 635,613.68 × 139,483.28
  4. Step 4: Simplify right side
    423,789.03x = 88,657,482,837.01
  5. Step 5: Solve for x
    x = 88,657,482,837.01/423,789.03
  6. Step 6: Final answer
    x = 209,201.93

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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.