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Finding the Fourth Proportional to 476,863.20, 714,711.60 and 210,340.80

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Solution

The fourth proportional to 476,863.20, 714,711.60 and 210,340.80 is: 315,253.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,863.20 : 714,711.60 = 210,340.80 : x
  2. Step 2: Convert to fraction form
    476,863.20/714,711.60 = 210,340.80/x
  3. Step 3: Cross multiply
    476,863.20x = 714,711.60 × 210,340.80
  4. Step 4: Simplify right side
    476,863.20x = 150,333,009,713.28
  5. Step 5: Solve for x
    x = 150,333,009,713.28/476,863.20
  6. Step 6: Final answer
    x = 315,253.95

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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.