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Finding the Fourth Proportional to 538,544.40, 807,816.60 and 159,478.80

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Solution

The fourth proportional to 538,544.40, 807,816.60 and 159,478.80 is: 239,218.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,544.40 : 807,816.60 = 159,478.80 : x
  2. Step 2: Convert to fraction form
    538,544.40/807,816.60 = 159,478.80/x
  3. Step 3: Cross multiply
    538,544.40x = 807,816.60 × 159,478.80
  4. Step 4: Simplify right side
    538,544.40x = 128,829,621,988.08
  5. Step 5: Solve for x
    x = 128,829,621,988.08/538,544.40
  6. Step 6: Final answer
    x = 239,218.20

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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.