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Finding the Fourth Proportional to 338,873.74, 508,301.94 and 89,557.90

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Solution

The fourth proportional to 338,873.74, 508,301.94 and 89,557.90 is: 134,334.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,873.74 : 508,301.94 = 89,557.90 : x
  2. Step 2: Convert to fraction form
    338,873.74/508,301.94 = 89,557.90/x
  3. Step 3: Cross multiply
    338,873.74x = 508,301.94 × 89,557.90
  4. Step 4: Simplify right side
    338,873.74x = 45,522,454,312.33
  5. Step 5: Solve for x
    x = 45,522,454,312.33/338,873.74
  6. Step 6: Final answer
    x = 134,334.56

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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.