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Finding the Fourth Proportional to 361,836.70, 542,372.02 and 121,722.02

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Solution

The fourth proportional to 361,836.70, 542,372.02 and 121,722.02 is: 182,454.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,836.70 : 542,372.02 = 121,722.02 : x
  2. Step 2: Convert to fraction form
    361,836.70/542,372.02 = 121,722.02/x
  3. Step 3: Cross multiply
    361,836.70x = 542,372.02 × 121,722.02
  4. Step 4: Simplify right side
    361,836.70x = 66,018,617,865.88
  5. Step 5: Solve for x
    x = 66,018,617,865.88/361,836.70
  6. Step 6: Final answer
    x = 182,454.18

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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.