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Finding the Fourth Proportional to 437,577.60, 656,276.80 and 121,955.20

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Solution

The fourth proportional to 437,577.60, 656,276.80 and 121,955.20 is: 182,907.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,577.60 : 656,276.80 = 121,955.20 : x
  2. Step 2: Convert to fraction form
    437,577.60/656,276.80 = 121,955.20/x
  3. Step 3: Cross multiply
    437,577.60x = 656,276.80 × 121,955.20
  4. Step 4: Simplify right side
    437,577.60x = 80,036,368,399.36
  5. Step 5: Solve for x
    x = 80,036,368,399.36/437,577.60
  6. Step 6: Final answer
    x = 182,907.83

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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.