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Finding the Fourth Proportional to 220,313.76, 304,032.06 and 129,669.04

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Solution

The fourth proportional to 220,313.76, 304,032.06 and 129,669.04 is: 178,942.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,313.76 : 304,032.06 = 129,669.04 : x
  2. Step 2: Convert to fraction form
    220,313.76/304,032.06 = 129,669.04/x
  3. Step 3: Cross multiply
    220,313.76x = 304,032.06 × 129,669.04
  4. Step 4: Simplify right side
    220,313.76x = 39,423,545,349.42
  5. Step 5: Solve for x
    x = 39,423,545,349.42/220,313.76
  6. Step 6: Final answer
    x = 178,942.73

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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.