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Finding the Fourth Proportional to 472,498.80, 708,748.20 and 156,987.60

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Solution

The fourth proportional to 472,498.80, 708,748.20 and 156,987.60 is: 235,481.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,498.80 : 708,748.20 = 156,987.60 : x
  2. Step 2: Convert to fraction form
    472,498.80/708,748.20 = 156,987.60/x
  3. Step 3: Cross multiply
    472,498.80x = 708,748.20 × 156,987.60
  4. Step 4: Simplify right side
    472,498.80x = 111,264,678,922.32
  5. Step 5: Solve for x
    x = 111,264,678,922.32/472,498.80
  6. Step 6: Final answer
    x = 235,481.40

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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.