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Finding the Fourth Proportional to 387,514.80, 580,840.20 and 150,778.80

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Solution

The fourth proportional to 387,514.80, 580,840.20 and 150,778.80 is: 226,000.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,514.80 : 580,840.20 = 150,778.80 : x
  2. Step 2: Convert to fraction form
    387,514.80/580,840.20 = 150,778.80/x
  3. Step 3: Cross multiply
    387,514.80x = 580,840.20 × 150,778.80
  4. Step 4: Simplify right side
    387,514.80x = 87,578,388,347.76
  5. Step 5: Solve for x
    x = 87,578,388,347.76/387,514.80
  6. Step 6: Final answer
    x = 226,000.11

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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.