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Finding the Fourth Proportional to 286,630.20, 429,945.30 and 235,891.80

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Solution

The fourth proportional to 286,630.20, 429,945.30 and 235,891.80 is: 353,837.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,630.20 : 429,945.30 = 235,891.80 : x
  2. Step 2: Convert to fraction form
    286,630.20/429,945.30 = 235,891.80/x
  3. Step 3: Cross multiply
    286,630.20x = 429,945.30 × 235,891.80
  4. Step 4: Simplify right side
    286,630.20x = 101,420,570,718.54
  5. Step 5: Solve for x
    x = 101,420,570,718.54/286,630.20
  6. Step 6: Final answer
    x = 353,837.70

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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.