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Finding the Fourth Proportional to 220,000.70, 330,001.05 and 145,205.30

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Solution

The fourth proportional to 220,000.70, 330,001.05 and 145,205.30 is: 217,807.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,000.70 : 330,001.05 = 145,205.30 : x
  2. Step 2: Convert to fraction form
    220,000.70/330,001.05 = 145,205.30/x
  3. Step 3: Cross multiply
    220,000.70x = 330,001.05 × 145,205.30
  4. Step 4: Simplify right side
    220,000.70x = 47,917,901,465.57
  5. Step 5: Solve for x
    x = 47,917,901,465.57/220,000.70
  6. Step 6: Final answer
    x = 217,807.95

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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.