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Finding the Fourth Proportional to 221,805.60, 332,740.80 and 72,020.40

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Solution

The fourth proportional to 221,805.60, 332,740.80 and 72,020.40 is: 108,041.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,805.60 : 332,740.80 = 72,020.40 : x
  2. Step 2: Convert to fraction form
    221,805.60/332,740.80 = 72,020.40/x
  3. Step 3: Cross multiply
    221,805.60x = 332,740.80 × 72,020.40
  4. Step 4: Simplify right side
    221,805.60x = 23,964,125,512.32
  5. Step 5: Solve for x
    x = 23,964,125,512.32/221,805.60
  6. Step 6: Final answer
    x = 108,041.12

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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.