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Finding the Fourth Proportional to 615,514.70, 923,142.45 and 260,540.30

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Solution

The fourth proportional to 615,514.70, 923,142.45 and 260,540.30 is: 390,755.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,514.70 : 923,142.45 = 260,540.30 : x
  2. Step 2: Convert to fraction form
    615,514.70/923,142.45 = 260,540.30/x
  3. Step 3: Cross multiply
    615,514.70x = 923,142.45 × 260,540.30
  4. Step 4: Simplify right side
    615,514.70x = 240,515,810,865.74
  5. Step 5: Solve for x
    x = 240,515,810,865.74/615,514.70
  6. Step 6: Final answer
    x = 390,755.59

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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.