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Finding the Fourth Proportional to 220,561.30, 304,430.13 and 125,125.30

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Solution

The fourth proportional to 220,561.30, 304,430.13 and 125,125.30 is: 172,704.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,561.30 : 304,430.13 = 125,125.30 : x
  2. Step 2: Convert to fraction form
    220,561.30/304,430.13 = 125,125.30/x
  3. Step 3: Cross multiply
    220,561.30x = 304,430.13 × 125,125.30
  4. Step 4: Simplify right side
    220,561.30x = 38,091,911,345.29
  5. Step 5: Solve for x
    x = 38,091,911,345.29/220,561.30
  6. Step 6: Final answer
    x = 172,704.42

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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.