Home / 330,261,325.20-495,391,987.80-221,422,208.40

Finding the Fourth Proportional to 330,261,325.20, 495,391,987.80 and 221,422,208.40

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Solution

The fourth proportional to 330,261,325.20, 495,391,987.80 and 221,422,208.40 is: 332,133,312.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,261,325.20 : 495,391,987.80 = 221,422,208.40 : x
  2. Step 2: Convert to fraction form
    330,261,325.20/495,391,987.80 = 221,422,208.40/x
  3. Step 3: Cross multiply
    330,261,325.20x = 495,391,987.80 × 221,422,208.40
  4. Step 4: Simplify right side
    330,261,325.20x = 109,690,787,962,341,856
  5. Step 5: Solve for x
    x = 109,690,787,962,341,856/330,261,325.20
  6. Step 6: Final answer
    x = 332,133,312.60

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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.