Home / 437,629.20-656,443.80-105,205.20

Finding the Fourth Proportional to 437,629.20, 656,443.80 and 105,205.20

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Solution

The fourth proportional to 437,629.20, 656,443.80 and 105,205.20 is: 157,807.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,629.20 : 656,443.80 = 105,205.20 : x
  2. Step 2: Convert to fraction form
    437,629.20/656,443.80 = 105,205.20/x
  3. Step 3: Cross multiply
    437,629.20x = 656,443.80 × 105,205.20
  4. Step 4: Simplify right side
    437,629.20x = 69,061,301,267.76
  5. Step 5: Solve for x
    x = 69,061,301,267.76/437,629.20
  6. Step 6: Final answer
    x = 157,807.80

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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.