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Finding the Fourth Proportional to 230,672.40, 346,019.40 and 72,913.20

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Solution

The fourth proportional to 230,672.40, 346,019.40 and 72,913.20 is: 109,373.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,672.40 : 346,019.40 = 72,913.20 : x
  2. Step 2: Convert to fraction form
    230,672.40/346,019.40 = 72,913.20/x
  3. Step 3: Cross multiply
    230,672.40x = 346,019.40 × 72,913.20
  4. Step 4: Simplify right side
    230,672.40x = 25,229,381,716.08
  5. Step 5: Solve for x
    x = 25,229,381,716.08/230,672.40
  6. Step 6: Final answer
    x = 109,373.21

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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.