Home / 345,148.30-517,286.22-155,406.61

Finding the Fourth Proportional to 345,148.30, 517,286.22 and 155,406.61

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Solution

The fourth proportional to 345,148.30, 517,286.22 and 155,406.61 is: 232,913.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,148.30 : 517,286.22 = 155,406.61 : x
  2. Step 2: Convert to fraction form
    345,148.30/517,286.22 = 155,406.61/x
  3. Step 3: Cross multiply
    345,148.30x = 517,286.22 × 155,406.61
  4. Step 4: Simplify right side
    345,148.30x = 80,389,697,849.91
  5. Step 5: Solve for x
    x = 80,389,697,849.91/345,148.30
  6. Step 6: Final answer
    x = 232,913.50

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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.