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Finding the Fourth Proportional to 409,633.48, 614,484.78 and 129,167.56

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Solution

The fourth proportional to 409,633.48, 614,484.78 and 129,167.56 is: 193,762.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,633.48 : 614,484.78 = 129,167.56 : x
  2. Step 2: Convert to fraction form
    409,633.48/614,484.78 = 129,167.56/x
  3. Step 3: Cross multiply
    409,633.48x = 614,484.78 × 129,167.56
  4. Step 4: Simplify right side
    409,633.48x = 79,371,499,689.74
  5. Step 5: Solve for x
    x = 79,371,499,689.74/409,633.48
  6. Step 6: Final answer
    x = 193,762.24

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1.5x scale

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.