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Finding the Fourth Proportional to 172,821.60, 259,232.40 and 147,452.40

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Solution

The fourth proportional to 172,821.60, 259,232.40 and 147,452.40 is: 221,178.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,821.60 : 259,232.40 = 147,452.40 : x
  2. Step 2: Convert to fraction form
    172,821.60/259,232.40 = 147,452.40/x
  3. Step 3: Cross multiply
    172,821.60x = 259,232.40 × 147,452.40
  4. Step 4: Simplify right side
    172,821.60x = 38,224,439,537.76
  5. Step 5: Solve for x
    x = 38,224,439,537.76/172,821.60
  6. Step 6: Final answer
    x = 221,178.60

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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.