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Finding the Fourth Proportional to 368,251.97, 508,111.51 and 215,260.58

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Solution

The fourth proportional to 368,251.97, 508,111.51 and 215,260.58 is: 297,015.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,251.97 : 508,111.51 = 215,260.58 : x
  2. Step 2: Convert to fraction form
    368,251.97/508,111.51 = 215,260.58/x
  3. Step 3: Cross multiply
    368,251.97x = 508,111.51 × 215,260.58
  4. Step 4: Simplify right side
    368,251.97x = 109,376,380,155.71
  5. Step 5: Solve for x
    x = 109,376,380,155.71/368,251.97
  6. Step 6: Final answer
    x = 297,015.06

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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.