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Finding the Fourth Proportional to 478,689.39, 718,158.42 and 179,193.51

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Solution

The fourth proportional to 478,689.39, 718,158.42 and 179,193.51 is: 268,836.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,689.39 : 718,158.42 = 179,193.51 : x
  2. Step 2: Convert to fraction form
    478,689.39/718,158.42 = 179,193.51/x
  3. Step 3: Cross multiply
    478,689.39x = 718,158.42 × 179,193.51
  4. Step 4: Simplify right side
    478,689.39x = 128,689,328,015.85
  5. Step 5: Solve for x
    x = 128,689,328,015.85/478,689.39
  6. Step 6: Final answer
    x = 268,836.81

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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.