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Finding the Fourth Proportional to 331,987.38, 458,111.67 and 188,719.38

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Solution

The fourth proportional to 331,987.38, 458,111.67 and 188,719.38 is: 260,415.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,987.38 : 458,111.67 = 188,719.38 : x
  2. Step 2: Convert to fraction form
    331,987.38/458,111.67 = 188,719.38/x
  3. Step 3: Cross multiply
    331,987.38x = 458,111.67 × 188,719.38
  4. Step 4: Simplify right side
    331,987.38x = 86,454,550,333.16
  5. Step 5: Solve for x
    x = 86,454,550,333.16/331,987.38
  6. Step 6: Final answer
    x = 260,415.17

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1.5x scale

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.