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Finding the Fourth Proportional to 219,220.20, 328,830.30 and 194,725.80

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Solution

The fourth proportional to 219,220.20, 328,830.30 and 194,725.80 is: 292,088.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,220.20 : 328,830.30 = 194,725.80 : x
  2. Step 2: Convert to fraction form
    219,220.20/328,830.30 = 194,725.80/x
  3. Step 3: Cross multiply
    219,220.20x = 328,830.30 × 194,725.80
  4. Step 4: Simplify right side
    219,220.20x = 64,031,743,231.74
  5. Step 5: Solve for x
    x = 64,031,743,231.74/219,220.20
  6. Step 6: Final answer
    x = 292,088.70

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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.