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Finding the Fourth Proportional to 449,211.60, 619,885.44 and 245,221.92

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Solution

The fourth proportional to 449,211.60, 619,885.44 and 245,221.92 is: 338,391.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,211.60 : 619,885.44 = 245,221.92 : x
  2. Step 2: Convert to fraction form
    449,211.60/619,885.44 = 245,221.92/x
  3. Step 3: Cross multiply
    449,211.60x = 619,885.44 × 245,221.92
  4. Step 4: Simplify right side
    449,211.60x = 152,009,497,776.85
  5. Step 5: Solve for x
    x = 152,009,497,776.85/449,211.60
  6. Step 6: Final answer
    x = 338,391.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.