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Finding the Fourth Proportional to 508,801.80, 763,289.10 and 272,080.20

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Solution

The fourth proportional to 508,801.80, 763,289.10 and 272,080.20 is: 408,166.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,801.80 : 763,289.10 = 272,080.20 : x
  2. Step 2: Convert to fraction form
    508,801.80/763,289.10 = 272,080.20/x
  3. Step 3: Cross multiply
    508,801.80x = 763,289.10 × 272,080.20
  4. Step 4: Simplify right side
    508,801.80x = 207,675,850,985.82
  5. Step 5: Solve for x
    x = 207,675,850,985.82/508,801.80
  6. Step 6: Final answer
    x = 408,166.50

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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.