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Finding the Fourth Proportional to 387,042.76, 534,154.26 and 225,975.88

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Solution

The fourth proportional to 387,042.76, 534,154.26 and 225,975.88 is: 311,867.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,042.76 : 534,154.26 = 225,975.88 : x
  2. Step 2: Convert to fraction form
    387,042.76/534,154.26 = 225,975.88/x
  3. Step 3: Cross multiply
    387,042.76x = 534,154.26 × 225,975.88
  4. Step 4: Simplify right side
    387,042.76x = 120,705,978,959.25
  5. Step 5: Solve for x
    x = 120,705,978,959.25/387,042.76
  6. Step 6: Final answer
    x = 311,867.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.