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Finding the Fourth Proportional to 403,765.60, 605,429.70 and 167,132.20

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Solution

The fourth proportional to 403,765.60, 605,429.70 and 167,132.20 is: 250,607.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,765.60 : 605,429.70 = 167,132.20 : x
  2. Step 2: Convert to fraction form
    403,765.60/605,429.70 = 167,132.20/x
  3. Step 3: Cross multiply
    403,765.60x = 605,429.70 × 167,132.20
  4. Step 4: Simplify right side
    403,765.60x = 101,186,797,706.34
  5. Step 5: Solve for x
    x = 101,186,797,706.34/403,765.60
  6. Step 6: Final answer
    x = 250,607.77

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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.