Home / 238,143.40-328,641.30-130,711.48

Finding the Fourth Proportional to 238,143.40, 328,641.30 and 130,711.48

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Solution

The fourth proportional to 238,143.40, 328,641.30 and 130,711.48 is: 180,383.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,143.40 : 328,641.30 = 130,711.48 : x
  2. Step 2: Convert to fraction form
    238,143.40/328,641.30 = 130,711.48/x
  3. Step 3: Cross multiply
    238,143.40x = 328,641.30 × 130,711.48
  4. Step 4: Simplify right side
    238,143.40x = 42,957,190,712.12
  5. Step 5: Solve for x
    x = 42,957,190,712.12/238,143.40
  6. Step 6: Final answer
    x = 180,383.71

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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.