Home / 261,531.78-391,923.37-148,979.71

Finding the Fourth Proportional to 261,531.78, 391,923.37 and 148,979.71

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Solution

The fourth proportional to 261,531.78, 391,923.37 and 148,979.71 is: 223,256.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,531.78 : 391,923.37 = 148,979.71 : x
  2. Step 2: Convert to fraction form
    261,531.78/391,923.37 = 148,979.71/x
  3. Step 3: Cross multiply
    261,531.78x = 391,923.37 × 148,979.71
  4. Step 4: Simplify right side
    261,531.78x = 58,388,630,004.82
  5. Step 5: Solve for x
    x = 58,388,630,004.82/261,531.78
  6. Step 6: Final answer
    x = 223,256.35

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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.