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Finding the Fourth Proportional to 307,955.64, 424,885.84 and 178,869.20

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Solution

The fourth proportional to 307,955.64, 424,885.84 and 178,869.20 is: 246,785.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,955.64 : 424,885.84 = 178,869.20 : x
  2. Step 2: Convert to fraction form
    307,955.64/424,885.84 = 178,869.20/x
  3. Step 3: Cross multiply
    307,955.64x = 424,885.84 × 178,869.20
  4. Step 4: Simplify right side
    307,955.64x = 75,998,990,292.13
  5. Step 5: Solve for x
    x = 75,998,990,292.13/307,955.64
  6. Step 6: Final answer
    x = 246,785.51

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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.