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Finding the Fourth Proportional to 310,854.80, 466,512.60 and 205,638.80

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Solution

The fourth proportional to 310,854.80, 466,512.60 and 205,638.80 is: 308,610.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,854.80 : 466,512.60 = 205,638.80 : x
  2. Step 2: Convert to fraction form
    310,854.80/466,512.60 = 205,638.80/x
  3. Step 3: Cross multiply
    310,854.80x = 466,512.60 × 205,638.80
  4. Step 4: Simplify right side
    310,854.80x = 95,933,091,248.88
  5. Step 5: Solve for x
    x = 95,933,091,248.88/310,854.80
  6. Step 6: Final answer
    x = 308,610.62

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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.