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Finding the Fourth Proportional to 553,691.60, 830,494.20 and 216,666.80

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Solution

The fourth proportional to 553,691.60, 830,494.20 and 216,666.80 is: 324,983.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,691.60 : 830,494.20 = 216,666.80 : x
  2. Step 2: Convert to fraction form
    553,691.60/830,494.20 = 216,666.80/x
  3. Step 3: Cross multiply
    553,691.60x = 830,494.20 × 216,666.80
  4. Step 4: Simplify right side
    553,691.60x = 179,940,520,732.56
  5. Step 5: Solve for x
    x = 179,940,520,732.56/553,691.60
  6. Step 6: Final answer
    x = 324,983.30

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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.