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Finding the Fourth Proportional to 538,526.40, 807,789.60 and 159,460.80

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Solution

The fourth proportional to 538,526.40, 807,789.60 and 159,460.80 is: 239,191.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,526.40 : 807,789.60 = 159,460.80 : x
  2. Step 2: Convert to fraction form
    538,526.40/807,789.60 = 159,460.80/x
  3. Step 3: Cross multiply
    538,526.40x = 807,789.60 × 159,460.80
  4. Step 4: Simplify right side
    538,526.40x = 128,810,775,847.68
  5. Step 5: Solve for x
    x = 128,810,775,847.68/538,526.40
  6. Step 6: Final answer
    x = 239,191.20

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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.