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Finding the Fourth Proportional to 238,339.32, 328,910.94 and 130,911.84

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Solution

The fourth proportional to 238,339.32, 328,910.94 and 130,911.84 is: 180,659.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,339.32 : 328,910.94 = 130,911.84 : x
  2. Step 2: Convert to fraction form
    238,339.32/328,910.94 = 130,911.84/x
  3. Step 3: Cross multiply
    238,339.32x = 328,910.94 × 130,911.84
  4. Step 4: Simplify right side
    238,339.32x = 43,058,336,351.53
  5. Step 5: Solve for x
    x = 43,058,336,351.53/238,339.32
  6. Step 6: Final answer
    x = 180,659.81

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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.