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Finding the Fourth Proportional to 330,504.08, 495,751.80 and 81,188.24

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Solution

The fourth proportional to 330,504.08, 495,751.80 and 81,188.24 is: 121,781.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,504.08 : 495,751.80 = 81,188.24 : x
  2. Step 2: Convert to fraction form
    330,504.08/495,751.80 = 81,188.24/x
  3. Step 3: Cross multiply
    330,504.08x = 495,751.80 × 81,188.24
  4. Step 4: Simplify right side
    330,504.08x = 40,249,216,118.83
  5. Step 5: Solve for x
    x = 40,249,216,118.83/330,504.08
  6. Step 6: Final answer
    x = 121,781.30

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1.5x scale

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.