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Finding the Fourth Proportional to 238,210.75, 328,760.04 and 137,608.75

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Solution

The fourth proportional to 238,210.75, 328,760.04 and 137,608.75 is: 189,916.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,210.75 : 328,760.04 = 137,608.75 : x
  2. Step 2: Convert to fraction form
    238,210.75/328,760.04 = 137,608.75/x
  3. Step 3: Cross multiply
    238,210.75x = 328,760.04 × 137,608.75
  4. Step 4: Simplify right side
    238,210.75x = 45,240,258,154.35
  5. Step 5: Solve for x
    x = 45,240,258,154.35/238,210.75
  6. Step 6: Final answer
    x = 189,916.95

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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.