Home / 330,619.30-495,928.95-81,301.30

Finding the Fourth Proportional to 330,619.30, 495,928.95 and 81,301.30

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Solution

The fourth proportional to 330,619.30, 495,928.95 and 81,301.30 is: 121,951.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,619.30 : 495,928.95 = 81,301.30 : x
  2. Step 2: Convert to fraction form
    330,619.30/495,928.95 = 81,301.30/x
  3. Step 3: Cross multiply
    330,619.30x = 495,928.95 × 81,301.30
  4. Step 4: Simplify right side
    330,619.30x = 40,319,668,342.64
  5. Step 5: Solve for x
    x = 40,319,668,342.64/330,619.30
  6. Step 6: Final answer
    x = 121,951.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.