Home / 381,864.90-572,581.35-145,215.30

Finding the Fourth Proportional to 381,864.90, 572,581.35 and 145,215.30

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Solution

The fourth proportional to 381,864.90, 572,581.35 and 145,215.30 is: 217,740.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,864.90 : 572,581.35 = 145,215.30 : x
  2. Step 2: Convert to fraction form
    381,864.90/572,581.35 = 145,215.30/x
  3. Step 3: Cross multiply
    381,864.90x = 572,581.35 × 145,215.30
  4. Step 4: Simplify right side
    381,864.90x = 83,147,572,514.66
  5. Step 5: Solve for x
    x = 83,147,572,514.66/381,864.90
  6. Step 6: Final answer
    x = 217,740.81

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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.