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Finding the Fourth Proportional to 403,369.66, 605,049.02 and 137,315.64

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Solution

The fourth proportional to 403,369.66, 605,049.02 and 137,315.64 is: 205,971.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,369.66 : 605,049.02 = 137,315.64 : x
  2. Step 2: Convert to fraction form
    403,369.66/605,049.02 = 137,315.64/x
  3. Step 3: Cross multiply
    403,369.66x = 605,049.02 × 137,315.64
  4. Step 4: Simplify right side
    403,369.66x = 83,082,693,412.67
  5. Step 5: Solve for x
    x = 83,082,693,412.67/403,369.66
  6. Step 6: Final answer
    x = 205,971.60

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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.