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Finding the Fourth Proportional to 355,500.80, 532,387.20 and 188,921.60

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Solution

The fourth proportional to 355,500.80, 532,387.20 and 188,921.60 is: 282,923.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,500.80 : 532,387.20 = 188,921.60 : x
  2. Step 2: Convert to fraction form
    355,500.80/532,387.20 = 188,921.60/x
  3. Step 3: Cross multiply
    355,500.80x = 532,387.20 × 188,921.60
  4. Step 4: Simplify right side
    355,500.80x = 100,579,441,643.52
  5. Step 5: Solve for x
    x = 100,579,441,643.52/355,500.80
  6. Step 6: Final answer
    x = 282,923.25

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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.