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Finding the Fourth Proportional to 452,802.20, 679,203.30 and 137,218.10

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Solution

The fourth proportional to 452,802.20, 679,203.30 and 137,218.10 is: 205,827.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,802.20 : 679,203.30 = 137,218.10 : x
  2. Step 2: Convert to fraction form
    452,802.20/679,203.30 = 137,218.10/x
  3. Step 3: Cross multiply
    452,802.20x = 679,203.30 × 137,218.10
  4. Step 4: Simplify right side
    452,802.20x = 93,198,986,339.73
  5. Step 5: Solve for x
    x = 93,198,986,339.73/452,802.20
  6. Step 6: Final answer
    x = 205,827.15

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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.