Home / 237,890.13-328,258.20-130,431.88

Finding the Fourth Proportional to 237,890.13, 328,258.20 and 130,431.88

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Solution

The fourth proportional to 237,890.13, 328,258.20 and 130,431.88 is: 179,979.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    237,890.13 : 328,258.20 = 130,431.88 : x
  2. Step 2: Convert to fraction form
    237,890.13/328,258.20 = 130,431.88/x
  3. Step 3: Cross multiply
    237,890.13x = 328,258.20 × 130,431.88
  4. Step 4: Simplify right side
    237,890.13x = 42,815,334,151.42
  5. Step 5: Solve for x
    x = 42,815,334,151.42/237,890.13
  6. Step 6: Final answer
    x = 179,979.45

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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.