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Finding the Fourth Proportional to 220,507.95, 304,323.57 and 129,892.44

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Solution

The fourth proportional to 220,507.95, 304,323.57 and 129,892.44 is: 179,264.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,507.95 : 304,323.57 = 129,892.44 : x
  2. Step 2: Convert to fraction form
    220,507.95/304,323.57 = 129,892.44/x
  3. Step 3: Cross multiply
    220,507.95x = 304,323.57 × 129,892.44
  4. Step 4: Simplify right side
    220,507.95x = 39,529,331,056.81
  5. Step 5: Solve for x
    x = 39,529,331,056.81/220,507.95
  6. Step 6: Final answer
    x = 179,264.88

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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.