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Finding the Fourth Proportional to 372,903.60, 559,355.40 and 215,002.20

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Solution

The fourth proportional to 372,903.60, 559,355.40 and 215,002.20 is: 322,503.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,903.60 : 559,355.40 = 215,002.20 : x
  2. Step 2: Convert to fraction form
    372,903.60/559,355.40 = 215,002.20/x
  3. Step 3: Cross multiply
    372,903.60x = 559,355.40 × 215,002.20
  4. Step 4: Simplify right side
    372,903.60x = 120,262,641,581.88
  5. Step 5: Solve for x
    x = 120,262,641,581.88/372,903.60
  6. Step 6: Final answer
    x = 322,503.30

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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.