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Finding the Fourth Proportional to 389,220.67, 537,124.62 and 219,454.84

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Solution

The fourth proportional to 389,220.67, 537,124.62 and 219,454.84 is: 302,847.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,220.67 : 537,124.62 = 219,454.84 : x
  2. Step 2: Convert to fraction form
    389,220.67/537,124.62 = 219,454.84/x
  3. Step 3: Cross multiply
    389,220.67x = 537,124.62 × 219,454.84
  4. Step 4: Simplify right side
    389,220.67x = 117,874,597,542.16
  5. Step 5: Solve for x
    x = 117,874,597,542.16/389,220.67
  6. Step 6: Final answer
    x = 302,847.73

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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.