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Finding the Fourth Proportional to 261,058.80, 391,150.80 and 223,442.40

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Solution

The fourth proportional to 261,058.80, 391,150.80 and 223,442.40 is: 334,789.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,058.80 : 391,150.80 = 223,442.40 : x
  2. Step 2: Convert to fraction form
    261,058.80/391,150.80 = 223,442.40/x
  3. Step 3: Cross multiply
    261,058.80x = 391,150.80 × 223,442.40
  4. Step 4: Simplify right side
    261,058.80x = 87,399,673,513.92
  5. Step 5: Solve for x
    x = 87,399,673,513.92/261,058.80
  6. Step 6: Final answer
    x = 334,789.23

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1.5x scale

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.