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Finding the Fourth Proportional to 367,221.60, 550,573.20 and 142,495.20

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Solution

The fourth proportional to 367,221.60, 550,573.20 and 142,495.20 is: 213,642.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,221.60 : 550,573.20 = 142,495.20 : x
  2. Step 2: Convert to fraction form
    367,221.60/550,573.20 = 142,495.20/x
  3. Step 3: Cross multiply
    367,221.60x = 550,573.20 × 142,495.20
  4. Step 4: Simplify right side
    367,221.60x = 78,454,038,248.64
  5. Step 5: Solve for x
    x = 78,454,038,248.64/367,221.60
  6. Step 6: Final answer
    x = 213,642.22

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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.