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Finding the Fourth Proportional to 288,642.04, 398,308.85 and 159,572.78

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Solution

The fourth proportional to 288,642.04, 398,308.85 and 159,572.78 is: 220,200.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,642.04 : 398,308.85 = 159,572.78 : x
  2. Step 2: Convert to fraction form
    288,642.04/398,308.85 = 159,572.78/x
  3. Step 3: Cross multiply
    288,642.04x = 398,308.85 × 159,572.78
  4. Step 4: Simplify right side
    288,642.04x = 63,559,250,493.10
  5. Step 5: Solve for x
    x = 63,559,250,493.10/288,642.04
  6. Step 6: Final answer
    x = 220,200.95

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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.