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Finding the Fourth Proportional to 220,507.84, 304,307.04 and 129,869.92

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Solution

The fourth proportional to 220,507.84, 304,307.04 and 129,869.92 is: 179,224.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,507.84 : 304,307.04 = 129,869.92 : x
  2. Step 2: Convert to fraction form
    220,507.84/304,307.04 = 129,869.92/x
  3. Step 3: Cross multiply
    220,507.84x = 304,307.04 × 129,869.92
  4. Step 4: Simplify right side
    220,507.84x = 39,520,330,940.24
  5. Step 5: Solve for x
    x = 39,520,330,940.24/220,507.84
  6. Step 6: Final answer
    x = 179,224.15

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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.