Home / 345,115.54-517,237.12-155,373.85

Finding the Fourth Proportional to 345,115.54, 517,237.12 and 155,373.85

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Solution

The fourth proportional to 345,115.54, 517,237.12 and 155,373.85 is: 232,864.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,115.54 : 517,237.12 = 155,373.85 : x
  2. Step 2: Convert to fraction form
    345,115.54/517,237.12 = 155,373.85/x
  3. Step 3: Cross multiply
    345,115.54x = 517,237.12 × 155,373.85
  4. Step 4: Simplify right side
    345,115.54x = 80,365,119,334.26
  5. Step 5: Solve for x
    x = 80,365,119,334.26/345,115.54
  6. Step 6: Final answer
    x = 232,864.39

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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.