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Finding the Fourth Proportional to 379,775.55, 569,572.20 and 219,504.90

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Solution

The fourth proportional to 379,775.55, 569,572.20 and 219,504.90 is: 329,204.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,775.55 : 569,572.20 = 219,504.90 : x
  2. Step 2: Convert to fraction form
    379,775.55/569,572.20 = 219,504.90/x
  3. Step 3: Cross multiply
    379,775.55x = 569,572.20 × 219,504.90
  4. Step 4: Simplify right side
    379,775.55x = 125,023,888,803.78
  5. Step 5: Solve for x
    x = 125,023,888,803.78/379,775.55
  6. Step 6: Final answer
    x = 329,204.68

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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.