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Finding the Fourth Proportional to 363,729.60, 545,335.20 and 163,886.40

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Solution

The fourth proportional to 363,729.60, 545,335.20 and 163,886.40 is: 245,712.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,729.60 : 545,335.20 = 163,886.40 : x
  2. Step 2: Convert to fraction form
    363,729.60/545,335.20 = 163,886.40/x
  3. Step 3: Cross multiply
    363,729.60x = 545,335.20 × 163,886.40
  4. Step 4: Simplify right side
    363,729.60x = 89,373,022,721.28
  5. Step 5: Solve for x
    x = 89,373,022,721.28/363,729.60
  6. Step 6: Final answer
    x = 245,712.81

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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.