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Finding the Fourth Proportional to 269,191.20, 403,300.80 and 156,779.40

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Solution

The fourth proportional to 269,191.20, 403,300.80 and 156,779.40 is: 234,886.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,191.20 : 403,300.80 = 156,779.40 : x
  2. Step 2: Convert to fraction form
    269,191.20/403,300.80 = 156,779.40/x
  3. Step 3: Cross multiply
    269,191.20x = 403,300.80 × 156,779.40
  4. Step 4: Simplify right side
    269,191.20x = 63,229,257,443.52
  5. Step 5: Solve for x
    x = 63,229,257,443.52/269,191.20
  6. Step 6: Final answer
    x = 234,886.05

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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.