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Finding the Fourth Proportional to 542,135.95, 748,152.06 and 300,422.56

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Solution

The fourth proportional to 542,135.95, 748,152.06 and 300,422.56 is: 414,585.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,135.95 : 748,152.06 = 300,422.56 : x
  2. Step 2: Convert to fraction form
    542,135.95/748,152.06 = 300,422.56/x
  3. Step 3: Cross multiply
    542,135.95x = 748,152.06 × 300,422.56
  4. Step 4: Simplify right side
    542,135.95x = 224,761,757,134.47
  5. Step 5: Solve for x
    x = 224,761,757,134.47/542,135.95
  6. Step 6: Final answer
    x = 414,585.60

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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.