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Finding the Fourth Proportional to 330,080,680.80, 495,121,021.20 and 100,019,871.90

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Solution

The fourth proportional to 330,080,680.80, 495,121,021.20 and 100,019,871.90 is: 150,029,807.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,080,680.80 : 495,121,021.20 = 100,019,871.90 : x
  2. Step 2: Convert to fraction form
    330,080,680.80/495,121,021.20 = 100,019,871.90/x
  3. Step 3: Cross multiply
    330,080,680.80x = 495,121,021.20 × 100,019,871.90
  4. Step 4: Simplify right side
    330,080,680.80x = 49,521,941,115,421,184
  5. Step 5: Solve for x
    x = 49,521,941,115,421,184/330,080,680.80
  6. Step 6: Final answer
    x = 150,029,807.85

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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.