Home / 391,277.10-587,041.62-178,121.28

Finding the Fourth Proportional to 391,277.10, 587,041.62 and 178,121.28

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Solution

The fourth proportional to 391,277.10, 587,041.62 and 178,121.28 is: 267,239.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,277.10 : 587,041.62 = 178,121.28 : x
  2. Step 2: Convert to fraction form
    391,277.10/587,041.62 = 178,121.28/x
  3. Step 3: Cross multiply
    391,277.10x = 587,041.62 × 178,121.28
  4. Step 4: Simplify right side
    391,277.10x = 104,564,604,767.67
  5. Step 5: Solve for x
    x = 104,564,604,767.67/391,277.10
  6. Step 6: Final answer
    x = 267,239.27

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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.