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Finding the Fourth Proportional to 437,999.60, 656,995.53 and 138,480.38

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Solution

The fourth proportional to 437,999.60, 656,995.53 and 138,480.38 is: 207,719.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,999.60 : 656,995.53 = 138,480.38 : x
  2. Step 2: Convert to fraction form
    437,999.60/656,995.53 = 138,480.38/x
  3. Step 3: Cross multiply
    437,999.60x = 656,995.53 × 138,480.38
  4. Step 4: Simplify right side
    437,999.60x = 90,980,993,656.88
  5. Step 5: Solve for x
    x = 90,980,993,656.88/437,999.60
  6. Step 6: Final answer
    x = 207,719.35

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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.