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Finding the Fourth Proportional to 472,305.60, 708,544.80 and 191,851.20

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Solution

The fourth proportional to 472,305.60, 708,544.80 and 191,851.20 is: 287,811.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,305.60 : 708,544.80 = 191,851.20 : x
  2. Step 2: Convert to fraction form
    472,305.60/708,544.80 = 191,851.20/x
  3. Step 3: Cross multiply
    472,305.60x = 708,544.80 × 191,851.20
  4. Step 4: Simplify right side
    472,305.60x = 135,935,170,133.76
  5. Step 5: Solve for x
    x = 135,935,170,133.76/472,305.60
  6. Step 6: Final answer
    x = 287,811.90

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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.