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Finding the Fourth Proportional to 551,726.16, 761,730.66 and 361,061.88

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Solution

The fourth proportional to 551,726.16, 761,730.66 and 361,061.88 is: 498,493.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,726.16 : 761,730.66 = 361,061.88 : x
  2. Step 2: Convert to fraction form
    551,726.16/761,730.66 = 361,061.88/x
  3. Step 3: Cross multiply
    551,726.16x = 761,730.66 × 361,061.88
  4. Step 4: Simplify right side
    551,726.16x = 275,031,904,153.24
  5. Step 5: Solve for x
    x = 275,031,904,153.24/551,726.16
  6. Step 6: Final answer
    x = 498,493.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.