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Finding the Fourth Proportional to 363,430.20, 545,145.30 and 263,046.90

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Solution

The fourth proportional to 363,430.20, 545,145.30 and 263,046.90 is: 394,570.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,430.20 : 545,145.30 = 263,046.90 : x
  2. Step 2: Convert to fraction form
    363,430.20/545,145.30 = 263,046.90/x
  3. Step 3: Cross multiply
    363,430.20x = 545,145.30 × 263,046.90
  4. Step 4: Simplify right side
    363,430.20x = 143,398,781,214.57
  5. Step 5: Solve for x
    x = 143,398,781,214.57/363,430.20
  6. Step 6: Final answer
    x = 394,570.35

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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.