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Finding the Fourth Proportional to 355,648.80, 532,609.20 and 189,069.60

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Solution

The fourth proportional to 355,648.80, 532,609.20 and 189,069.60 is: 283,145.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,648.80 : 532,609.20 = 189,069.60 : x
  2. Step 2: Convert to fraction form
    355,648.80/532,609.20 = 189,069.60/x
  3. Step 3: Cross multiply
    355,648.80x = 532,609.20 × 189,069.60
  4. Step 4: Simplify right side
    355,648.80x = 100,700,208,400.32
  5. Step 5: Solve for x
    x = 100,700,208,400.32/355,648.80
  6. Step 6: Final answer
    x = 283,145.08

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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.