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Finding the Fourth Proportional to 538,520.40, 807,780.60 and 159,454.80

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Solution

The fourth proportional to 538,520.40, 807,780.60 and 159,454.80 is: 239,182.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,520.40 : 807,780.60 = 159,454.80 : x
  2. Step 2: Convert to fraction form
    538,520.40/807,780.60 = 159,454.80/x
  3. Step 3: Cross multiply
    538,520.40x = 807,780.60 × 159,454.80
  4. Step 4: Simplify right side
    538,520.40x = 128,804,494,016.88
  5. Step 5: Solve for x
    x = 128,804,494,016.88/538,520.40
  6. Step 6: Final answer
    x = 239,182.20

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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.