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Finding the Fourth Proportional to 381,718.40, 572,607.63 and 101,235.65

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Solution

The fourth proportional to 381,718.40, 572,607.63 and 101,235.65 is: 151,861.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,718.40 : 572,607.63 = 101,235.65 : x
  2. Step 2: Convert to fraction form
    381,718.40/572,607.63 = 101,235.65/x
  3. Step 3: Cross multiply
    381,718.40x = 572,607.63 × 101,235.65
  4. Step 4: Simplify right side
    381,718.40x = 57,968,302,754.97
  5. Step 5: Solve for x
    x = 57,968,302,754.97/381,718.40
  6. Step 6: Final answer
    x = 151,861.43

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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.