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Finding the Fourth Proportional to 230,019.95, 345,043.70 and 72,248.40

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Solution

The fourth proportional to 230,019.95, 345,043.70 and 72,248.40 is: 108,376.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,019.95 : 345,043.70 = 72,248.40 : x
  2. Step 2: Convert to fraction form
    230,019.95/345,043.70 = 72,248.40/x
  3. Step 3: Cross multiply
    230,019.95x = 345,043.70 × 72,248.40
  4. Step 4: Simplify right side
    230,019.95x = 24,928,855,255.08
  5. Step 5: Solve for x
    x = 24,928,855,255.08/230,019.95
  6. Step 6: Final answer
    x = 108,376.93

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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.