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Finding the Fourth Proportional to 664,059.20, 996,088.80 and 165,423.20

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Solution

The fourth proportional to 664,059.20, 996,088.80 and 165,423.20 is: 248,134.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,059.20 : 996,088.80 = 165,423.20 : x
  2. Step 2: Convert to fraction form
    664,059.20/996,088.80 = 165,423.20/x
  3. Step 3: Cross multiply
    664,059.20x = 996,088.80 × 165,423.20
  4. Step 4: Simplify right side
    664,059.20x = 164,776,196,780.16
  5. Step 5: Solve for x
    x = 164,776,196,780.16/664,059.20
  6. Step 6: Final answer
    x = 248,134.80

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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.