Home / 437,981.20-656,970.28-105,557.20

Finding the Fourth Proportional to 437,981.20, 656,970.28 and 105,557.20

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Solution

The fourth proportional to 437,981.20, 656,970.28 and 105,557.20 is: 158,335.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,981.20 : 656,970.28 = 105,557.20 : x
  2. Step 2: Convert to fraction form
    437,981.20/656,970.28 = 105,557.20/x
  3. Step 3: Cross multiply
    437,981.20x = 656,970.28 × 105,557.20
  4. Step 4: Simplify right side
    437,981.20x = 69,347,943,240.02
  5. Step 5: Solve for x
    x = 69,347,943,240.02/437,981.20
  6. Step 6: Final answer
    x = 158,335.43

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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.