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Finding the Fourth Proportional to 342,864.65, 514,379.09 and 143,073.90

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Solution

The fourth proportional to 342,864.65, 514,379.09 and 143,073.90 is: 214,645.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,864.65 : 514,379.09 = 143,073.90 : x
  2. Step 2: Convert to fraction form
    342,864.65/514,379.09 = 143,073.90/x
  3. Step 3: Cross multiply
    342,864.65x = 514,379.09 × 143,073.90
  4. Step 4: Simplify right side
    342,864.65x = 73,594,222,484.75
  5. Step 5: Solve for x
    x = 73,594,222,484.75/342,864.65
  6. Step 6: Final answer
    x = 214,645.12

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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.