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Finding the Fourth Proportional to 342,331.44, 513,543.87 and 142,605.11

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Solution

The fourth proportional to 342,331.44, 513,543.87 and 142,605.11 is: 213,927.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,331.44 : 513,543.87 = 142,605.11 : x
  2. Step 2: Convert to fraction form
    342,331.44/513,543.87 = 142,605.11/x
  3. Step 3: Cross multiply
    342,331.44x = 513,543.87 × 142,605.11
  4. Step 4: Simplify right side
    342,331.44x = 73,233,981,355.04
  5. Step 5: Solve for x
    x = 73,233,981,355.04/342,331.44
  6. Step 6: Final answer
    x = 213,927.13

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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.