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Finding the Fourth Proportional to 403,240.60, 605,079.60 and 166,607.20

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Solution

The fourth proportional to 403,240.60, 605,079.60 and 166,607.20 is: 250,001.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,240.60 : 605,079.60 = 166,607.20 : x
  2. Step 2: Convert to fraction form
    403,240.60/605,079.60 = 166,607.20/x
  3. Step 3: Cross multiply
    403,240.60x = 605,079.60 × 166,607.20
  4. Step 4: Simplify right side
    403,240.60x = 100,810,617,933.12
  5. Step 5: Solve for x
    x = 100,810,617,933.12/403,240.60
  6. Step 6: Final answer
    x = 250,001.16

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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.