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Finding the Fourth Proportional to 452,612.60, 679,016.82 and 172,135.16

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Solution

The fourth proportional to 452,612.60, 679,016.82 and 172,135.16 is: 258,239.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,612.60 : 679,016.82 = 172,135.16 : x
  2. Step 2: Convert to fraction form
    452,612.60/679,016.82 = 172,135.16/x
  3. Step 3: Cross multiply
    452,612.60x = 679,016.82 × 172,135.16
  4. Step 4: Simplify right side
    452,612.60x = 116,882,668,953.39
  5. Step 5: Solve for x
    x = 116,882,668,953.39/452,612.60
  6. Step 6: Final answer
    x = 258,239.98

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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.