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Finding the Fourth Proportional to 279,086.40, 385,134.84 and 151,760.88

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Solution

The fourth proportional to 279,086.40, 385,134.84 and 151,760.88 is: 209,427.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,086.40 : 385,134.84 = 151,760.88 : x
  2. Step 2: Convert to fraction form
    279,086.40/385,134.84 = 151,760.88/x
  3. Step 3: Cross multiply
    279,086.40x = 385,134.84 × 151,760.88
  4. Step 4: Simplify right side
    279,086.40x = 58,448,402,237.06
  5. Step 5: Solve for x
    x = 58,448,402,237.06/279,086.40
  6. Step 6: Final answer
    x = 209,427.63

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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.