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Finding the Fourth Proportional to 423,500.93, 635,116.52 and 139,125.47

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Solution

The fourth proportional to 423,500.93, 635,116.52 and 139,125.47 is: 208,643.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,500.93 : 635,116.52 = 139,125.47 : x
  2. Step 2: Convert to fraction form
    423,500.93/635,116.52 = 139,125.47/x
  3. Step 3: Cross multiply
    423,500.93x = 635,116.52 × 139,125.47
  4. Step 4: Simplify right side
    423,500.93x = 88,360,883,903.68
  5. Step 5: Solve for x
    x = 88,360,883,903.68/423,500.93
  6. Step 6: Final answer
    x = 208,643.90

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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.