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Finding the Fourth Proportional to 220,863.16, 304,711.11 and 125,314.51

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Solution

The fourth proportional to 220,863.16, 304,711.11 and 125,314.51 is: 172,888.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,863.16 : 304,711.11 = 125,314.51 : x
  2. Step 2: Convert to fraction form
    220,863.16/304,711.11 = 125,314.51/x
  3. Step 3: Cross multiply
    220,863.16x = 304,711.11 × 125,314.51
  4. Step 4: Simplify right side
    220,863.16x = 38,184,723,441.21
  5. Step 5: Solve for x
    x = 38,184,723,441.21/220,863.16
  6. Step 6: Final answer
    x = 172,888.60

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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.