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Finding the Fourth Proportional to 220,885.02, 304,813.33 and 134,987.71

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Solution

The fourth proportional to 220,885.02, 304,813.33 and 134,987.71 is: 186,278.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,885.02 : 304,813.33 = 134,987.71 : x
  2. Step 2: Convert to fraction form
    220,885.02/304,813.33 = 134,987.71/x
  3. Step 3: Cross multiply
    220,885.02x = 304,813.33 × 134,987.71
  4. Step 4: Simplify right side
    220,885.02x = 41,146,052,294.67
  5. Step 5: Solve for x
    x = 41,146,052,294.67/220,885.02
  6. Step 6: Final answer
    x = 186,278.15

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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.