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Finding the Fourth Proportional to 220,125.60, 330,188.40 and 86,937.30

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Solution

The fourth proportional to 220,125.60, 330,188.40 and 86,937.30 is: 130,405.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,125.60 : 330,188.40 = 86,937.30 : x
  2. Step 2: Convert to fraction form
    220,125.60/330,188.40 = 86,937.30/x
  3. Step 3: Cross multiply
    220,125.60x = 330,188.40 × 86,937.30
  4. Step 4: Simplify right side
    220,125.60x = 28,705,687,987.32
  5. Step 5: Solve for x
    x = 28,705,687,987.32/220,125.60
  6. Step 6: Final answer
    x = 130,405.95

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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.