Home / 379,861.13-523,695.38-243,658.64

Finding the Fourth Proportional to 379,861.13, 523,695.38 and 243,658.64

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Solution

The fourth proportional to 379,861.13, 523,695.38 and 243,658.64 is: 335,919.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,861.13 : 523,695.38 = 243,658.64 : x
  2. Step 2: Convert to fraction form
    379,861.13/523,695.38 = 243,658.64/x
  3. Step 3: Cross multiply
    379,861.13x = 523,695.38 × 243,658.64
  4. Step 4: Simplify right side
    379,861.13x = 127,602,905,526.61
  5. Step 5: Solve for x
    x = 127,602,905,526.61/379,861.13
  6. Step 6: Final answer
    x = 335,919.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.