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Finding the Fourth Proportional to 392,005.85, 540,902.50 and 230,892.98

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Solution

The fourth proportional to 392,005.85, 540,902.50 and 230,892.98 is: 318,593.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,005.85 : 540,902.50 = 230,892.98 : x
  2. Step 2: Convert to fraction form
    392,005.85/540,902.50 = 230,892.98/x
  3. Step 3: Cross multiply
    392,005.85x = 540,902.50 × 230,892.98
  4. Step 4: Simplify right side
    392,005.85x = 124,890,589,875.28
  5. Step 5: Solve for x
    x = 124,890,589,875.28/392,005.85
  6. Step 6: Final answer
    x = 318,593.69

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1.5x scale

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.