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Finding the Fourth Proportional to 381,695.10, 572,542.65 and 223,842.30

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Solution

The fourth proportional to 381,695.10, 572,542.65 and 223,842.30 is: 335,763.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,695.10 : 572,542.65 = 223,842.30 : x
  2. Step 2: Convert to fraction form
    381,695.10/572,542.65 = 223,842.30/x
  3. Step 3: Cross multiply
    381,695.10x = 572,542.65 × 223,842.30
  4. Step 4: Simplify right side
    381,695.10x = 128,159,263,624.10
  5. Step 5: Solve for x
    x = 128,159,263,624.10/381,695.10
  6. Step 6: Final answer
    x = 335,763.45

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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.