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Finding the Fourth Proportional to 399,273.56, 550,340.90 and 283,025.96

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Solution

The fourth proportional to 399,273.56, 550,340.90 and 283,025.96 is: 390,110.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,273.56 : 550,340.90 = 283,025.96 : x
  2. Step 2: Convert to fraction form
    399,273.56/550,340.90 = 283,025.96/x
  3. Step 3: Cross multiply
    399,273.56x = 550,340.90 × 283,025.96
  4. Step 4: Simplify right side
    399,273.56x = 155,760,761,549.76
  5. Step 5: Solve for x
    x = 155,760,761,549.76/399,273.56
  6. Step 6: Final answer
    x = 390,110.38

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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.