Home / 331,342.90-457,258.45-180,439.78

Finding the Fourth Proportional to 331,342.90, 457,258.45 and 180,439.78

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Solution

The fourth proportional to 331,342.90, 457,258.45 and 180,439.78 is: 249,009.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,342.90 : 457,258.45 = 180,439.78 : x
  2. Step 2: Convert to fraction form
    331,342.90/457,258.45 = 180,439.78/x
  3. Step 3: Cross multiply
    331,342.90x = 457,258.45 × 180,439.78
  4. Step 4: Simplify right side
    331,342.90x = 82,507,614,121.14
  5. Step 5: Solve for x
    x = 82,507,614,121.14/331,342.90
  6. Step 6: Final answer
    x = 249,009.75

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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.