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Finding the Fourth Proportional to 558,840.80, 838,196.40 and 159,543.20

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Solution

The fourth proportional to 558,840.80, 838,196.40 and 159,543.20 is: 239,296.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,840.80 : 838,196.40 = 159,543.20 : x
  2. Step 2: Convert to fraction form
    558,840.80/838,196.40 = 159,543.20/x
  3. Step 3: Cross multiply
    558,840.80x = 838,196.40 × 159,543.20
  4. Step 4: Simplify right side
    558,840.80x = 133,728,535,884.48
  5. Step 5: Solve for x
    x = 133,728,535,884.48/558,840.80
  6. Step 6: Final answer
    x = 239,296.30

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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.