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Finding the Fourth Proportional to 216,374.03, 324,491.78 and 72,248.90

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Solution

The fourth proportional to 216,374.03, 324,491.78 and 72,248.90 is: 108,350.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,374.03 : 324,491.78 = 72,248.90 : x
  2. Step 2: Convert to fraction form
    216,374.03/324,491.78 = 72,248.90/x
  3. Step 3: Cross multiply
    216,374.03x = 324,491.78 × 72,248.90
  4. Step 4: Simplify right side
    216,374.03x = 23,444,175,155.89
  5. Step 5: Solve for x
    x = 23,444,175,155.89/216,374.03
  6. Step 6: Final answer
    x = 108,350.23

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1.5x scale

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.