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Finding the Fourth Proportional to 408,862.38, 563,990.93 and 265,717.76

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Solution

The fourth proportional to 408,862.38, 563,990.93 and 265,717.76 is: 366,535.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,862.38 : 563,990.93 = 265,717.76 : x
  2. Step 2: Convert to fraction form
    408,862.38/563,990.93 = 265,717.76/x
  3. Step 3: Cross multiply
    408,862.38x = 563,990.93 × 265,717.76
  4. Step 4: Simplify right side
    408,862.38x = 149,862,406,579.92
  5. Step 5: Solve for x
    x = 149,862,406,579.92/408,862.38
  6. Step 6: Final answer
    x = 366,535.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.