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Finding the Fourth Proportional to 221,173.04, 305,209.74 and 124,374.14

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Solution

The fourth proportional to 221,173.04, 305,209.74 and 124,374.14 is: 171,631.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,173.04 : 305,209.74 = 124,374.14 : x
  2. Step 2: Convert to fraction form
    221,173.04/305,209.74 = 124,374.14/x
  3. Step 3: Cross multiply
    221,173.04x = 305,209.74 × 124,374.14
  4. Step 4: Simplify right side
    221,173.04x = 37,960,198,932.12
  5. Step 5: Solve for x
    x = 37,960,198,932.12/221,173.04
  6. Step 6: Final answer
    x = 171,631.22

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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.