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Finding the Fourth Proportional to 551,909.94, 827,864.93 and 172,860.35

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Solution

The fourth proportional to 551,909.94, 827,864.93 and 172,860.35 is: 259,290.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,909.94 : 827,864.93 = 172,860.35 : x
  2. Step 2: Convert to fraction form
    551,909.94/827,864.93 = 172,860.35/x
  3. Step 3: Cross multiply
    551,909.94x = 827,864.93 × 172,860.35
  4. Step 4: Simplify right side
    551,909.94x = 143,105,021,552.53
  5. Step 5: Solve for x
    x = 143,105,021,552.53/551,909.94
  6. Step 6: Final answer
    x = 259,290.53

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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.