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Finding the Fourth Proportional to 542,229.32, 748,263.70 and 315,860.20

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Solution

The fourth proportional to 542,229.32, 748,263.70 and 315,860.20 is: 435,879.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,229.32 : 748,263.70 = 315,860.20 : x
  2. Step 2: Convert to fraction form
    542,229.32/748,263.70 = 315,860.20/x
  3. Step 3: Cross multiply
    542,229.32x = 748,263.70 × 315,860.20
  4. Step 4: Simplify right side
    542,229.32x = 236,346,721,934.74
  5. Step 5: Solve for x
    x = 236,346,721,934.74/542,229.32
  6. Step 6: Final answer
    x = 435,879.64

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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.