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Finding the Fourth Proportional to 391,261.32, 540,191.52 and 268,957.08

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Solution

The fourth proportional to 391,261.32, 540,191.52 and 268,957.08 is: 371,333.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,261.32 : 540,191.52 = 268,957.08 : x
  2. Step 2: Convert to fraction form
    391,261.32/540,191.52 = 268,957.08/x
  3. Step 3: Cross multiply
    391,261.32x = 540,191.52 × 268,957.08
  4. Step 4: Simplify right side
    391,261.32x = 145,288,333,859.96
  5. Step 5: Solve for x
    x = 145,288,333,859.96/391,261.32
  6. Step 6: Final answer
    x = 371,333.24

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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.