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Finding the Fourth Proportional to 403,328.60, 605,211.60 and 166,695.20

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Solution

The fourth proportional to 403,328.60, 605,211.60 and 166,695.20 is: 250,133.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,328.60 : 605,211.60 = 166,695.20 : x
  2. Step 2: Convert to fraction form
    403,328.60/605,211.60 = 166,695.20/x
  3. Step 3: Cross multiply
    403,328.60x = 605,211.60 × 166,695.20
  4. Step 4: Simplify right side
    403,328.60x = 100,885,868,704.32
  5. Step 5: Solve for x
    x = 100,885,868,704.32/403,328.60
  6. Step 6: Final answer
    x = 250,133.19

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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.