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Finding the Fourth Proportional to 423,529.31, 635,159.24 and 139,154.31

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Solution

The fourth proportional to 423,529.31, 635,159.24 and 139,154.31 is: 208,687.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,529.31 : 635,159.24 = 139,154.31 : x
  2. Step 2: Convert to fraction form
    423,529.31/635,159.24 = 139,154.31/x
  3. Step 3: Cross multiply
    423,529.31x = 635,159.24 × 139,154.31
  4. Step 4: Simplify right side
    423,529.31x = 88,385,145,782.32
  5. Step 5: Solve for x
    x = 88,385,145,782.32/423,529.31
  6. Step 6: Final answer
    x = 208,687.20

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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.