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Finding the Fourth Proportional to 423,755.46, 635,498.10 and 139,381.02

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Solution

The fourth proportional to 423,755.46, 635,498.10 and 139,381.02 is: 209,027.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,755.46 : 635,498.10 = 139,381.02 : x
  2. Step 2: Convert to fraction form
    423,755.46/635,498.10 = 139,381.02/x
  3. Step 3: Cross multiply
    423,755.46x = 635,498.10 × 139,381.02
  4. Step 4: Simplify right side
    423,755.46x = 88,576,373,386.06
  5. Step 5: Solve for x
    x = 88,576,373,386.06/423,755.46
  6. Step 6: Final answer
    x = 209,027.10

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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.