Home / 220,320,147.60-330,480,221.40-76,712,979.60

Finding the Fourth Proportional to 220,320,147.60, 330,480,221.40 and 76,712,979.60

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Solution

The fourth proportional to 220,320,147.60, 330,480,221.40 and 76,712,979.60 is: 115,069,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,320,147.60 : 330,480,221.40 = 76,712,979.60 : x
  2. Step 2: Convert to fraction form
    220,320,147.60/330,480,221.40 = 76,712,979.60/x
  3. Step 3: Cross multiply
    220,320,147.60x = 330,480,221.40 × 76,712,979.60
  4. Step 4: Simplify right side
    220,320,147.60x = 25,352,122,482,461,680
  5. Step 5: Solve for x
    x = 25,352,122,482,461,680/220,320,147.60
  6. Step 6: Final answer
    x = 115,069,469.40

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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.