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Finding the Fourth Proportional to 499,271.20, 748,906.80 and 249,920.80

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Solution

The fourth proportional to 499,271.20, 748,906.80 and 249,920.80 is: 374,881.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,271.20 : 748,906.80 = 249,920.80 : x
  2. Step 2: Convert to fraction form
    499,271.20/748,906.80 = 249,920.80/x
  3. Step 3: Cross multiply
    499,271.20x = 748,906.80 × 249,920.80
  4. Step 4: Simplify right side
    499,271.20x = 187,167,386,581.44
  5. Step 5: Solve for x
    x = 187,167,386,581.44/499,271.20
  6. Step 6: Final answer
    x = 374,881.20

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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.