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Finding the Fourth Proportional to 220,689.64, 304,498.62 and 130,049.32

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Solution

The fourth proportional to 220,689.64, 304,498.62 and 130,049.32 is: 179,436.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,689.64 : 304,498.62 = 130,049.32 : x
  2. Step 2: Convert to fraction form
    220,689.64/304,498.62 = 130,049.32/x
  3. Step 3: Cross multiply
    220,689.64x = 304,498.62 × 130,049.32
  4. Step 4: Simplify right side
    220,689.64x = 39,599,838,471.94
  5. Step 5: Solve for x
    x = 39,599,838,471.94/220,689.64
  6. Step 6: Final answer
    x = 179,436.78

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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.