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Finding the Fourth Proportional to 402,909.70, 604,364.55 and 242,551.30

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Solution

The fourth proportional to 402,909.70, 604,364.55 and 242,551.30 is: 363,826.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,909.70 : 604,364.55 = 242,551.30 : x
  2. Step 2: Convert to fraction form
    402,909.70/604,364.55 = 242,551.30/x
  3. Step 3: Cross multiply
    402,909.70x = 604,364.55 × 242,551.30
  4. Step 4: Simplify right side
    402,909.70x = 146,589,407,276.42
  5. Step 5: Solve for x
    x = 146,589,407,276.42/402,909.70
  6. Step 6: Final answer
    x = 363,826.95

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.