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Finding the Fourth Proportional to 220,000.40, 329,935.80 and 86,836.40

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Solution

The fourth proportional to 220,000.40, 329,935.80 and 86,836.40 is: 130,229.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,000.40 : 329,935.80 = 86,836.40 : x
  2. Step 2: Convert to fraction form
    220,000.40/329,935.80 = 86,836.40/x
  3. Step 3: Cross multiply
    220,000.40x = 329,935.80 × 86,836.40
  4. Step 4: Simplify right side
    220,000.40x = 28,650,437,103.12
  5. Step 5: Solve for x
    x = 28,650,437,103.12/220,000.40
  6. Step 6: Final answer
    x = 130,229.02

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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.