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Finding the Fourth Proportional to 216,040.10, 324,060.15 and 84,712.10

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Solution

The fourth proportional to 216,040.10, 324,060.15 and 84,712.10 is: 127,068.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,040.10 : 324,060.15 = 84,712.10 : x
  2. Step 2: Convert to fraction form
    216,040.10/324,060.15 = 84,712.10/x
  3. Step 3: Cross multiply
    216,040.10x = 324,060.15 × 84,712.10
  4. Step 4: Simplify right side
    216,040.10x = 27,451,815,832.82
  5. Step 5: Solve for x
    x = 27,451,815,832.82/216,040.10
  6. Step 6: Final answer
    x = 127,068.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.