Home / 431,155.20-646,502.40-150,681.60

Finding the Fourth Proportional to 431,155.20, 646,502.40 and 150,681.60

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Solution

The fourth proportional to 431,155.20, 646,502.40 and 150,681.60 is: 225,941.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,155.20 : 646,502.40 = 150,681.60 : x
  2. Step 2: Convert to fraction form
    431,155.20/646,502.40 = 150,681.60/x
  3. Step 3: Cross multiply
    431,155.20x = 646,502.40 × 150,681.60
  4. Step 4: Simplify right side
    431,155.20x = 97,416,016,035.84
  5. Step 5: Solve for x
    x = 97,416,016,035.84/431,155.20
  6. Step 6: Final answer
    x = 225,941.88

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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.