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Finding the Fourth Proportional to 403,959.08, 605,732.11 and 133,989.76

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Solution

The fourth proportional to 403,959.08, 605,732.11 and 133,989.76 is: 200,916.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,959.08 : 605,732.11 = 133,989.76 : x
  2. Step 2: Convert to fraction form
    403,959.08/605,732.11 = 133,989.76/x
  3. Step 3: Cross multiply
    403,959.08x = 605,732.11 × 133,989.76
  4. Step 4: Simplify right side
    403,959.08x = 81,161,900,465.38
  5. Step 5: Solve for x
    x = 81,161,900,465.38/403,959.08
  6. Step 6: Final answer
    x = 200,916.14

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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.