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Finding the Fourth Proportional to 238,405.92, 328,984.32 and 136,418.88

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Solution

The fourth proportional to 238,405.92, 328,984.32 and 136,418.88 is: 188,248.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,405.92 : 328,984.32 = 136,418.88 : x
  2. Step 2: Convert to fraction form
    238,405.92/328,984.32 = 136,418.88/x
  3. Step 3: Cross multiply
    238,405.92x = 328,984.32 × 136,418.88
  4. Step 4: Simplify right side
    238,405.92x = 44,879,672,471.96
  5. Step 5: Solve for x
    x = 44,879,672,471.96/238,405.92
  6. Step 6: Final answer
    x = 188,248.99

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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.