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Finding the Fourth Proportional to 437,999.90, 656,999.85 and 157,480.70

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Solution

The fourth proportional to 437,999.90, 656,999.85 and 157,480.70 is: 236,221.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,999.90 : 656,999.85 = 157,480.70 : x
  2. Step 2: Convert to fraction form
    437,999.90/656,999.85 = 157,480.70/x
  3. Step 3: Cross multiply
    437,999.90x = 656,999.85 × 157,480.70
  4. Step 4: Simplify right side
    437,999.90x = 103,464,796,277.90
  5. Step 5: Solve for x
    x = 103,464,796,277.90/437,999.90
  6. Step 6: Final answer
    x = 236,221.05

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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.