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Finding the Fourth Proportional to 551,507.90, 827,262.49 and 172,430.62

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Solution

The fourth proportional to 551,507.90, 827,262.49 and 172,430.62 is: 258,646.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,507.90 : 827,262.49 = 172,430.62 : x
  2. Step 2: Convert to fraction form
    551,507.90/827,262.49 = 172,430.62/x
  3. Step 3: Cross multiply
    551,507.90x = 827,262.49 × 172,430.62
  4. Step 4: Simplify right side
    551,507.90x = 142,645,384,053.44
  5. Step 5: Solve for x
    x = 142,645,384,053.44/551,507.90
  6. Step 6: Final answer
    x = 258,646.13

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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.