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Finding the Fourth Proportional to 220,689.60, 304,859.08 and 212,496.54

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Solution

The fourth proportional to 220,689.60, 304,859.08 and 212,496.54 is: 293,541.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,689.60 : 304,859.08 = 212,496.54 : x
  2. Step 2: Convert to fraction form
    220,689.60/304,859.08 = 212,496.54/x
  3. Step 3: Cross multiply
    220,689.60x = 304,859.08 × 212,496.54
  4. Step 4: Simplify right side
    220,689.60x = 64,781,499,687.58
  5. Step 5: Solve for x
    x = 64,781,499,687.58/220,689.60
  6. Step 6: Final answer
    x = 293,541.24

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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.