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Finding the Fourth Proportional to 391,455.27, 586,240.65 and 222,562.35

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Solution

The fourth proportional to 391,455.27, 586,240.65 and 222,562.35 is: 333,307.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,455.27 : 586,240.65 = 222,562.35 : x
  2. Step 2: Convert to fraction form
    391,455.27/586,240.65 = 222,562.35/x
  3. Step 3: Cross multiply
    391,455.27x = 586,240.65 × 222,562.35
  4. Step 4: Simplify right side
    391,455.27x = 130,475,096,729.53
  5. Step 5: Solve for x
    x = 130,475,096,729.53/391,455.27
  6. Step 6: Final answer
    x = 333,307.80

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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.