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Finding the Fourth Proportional to 272,343.20, 408,514.80 and 243,312.80

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Solution

The fourth proportional to 272,343.20, 408,514.80 and 243,312.80 is: 364,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,343.20 : 408,514.80 = 243,312.80 : x
  2. Step 2: Convert to fraction form
    272,343.20/408,514.80 = 243,312.80/x
  3. Step 3: Cross multiply
    272,343.20x = 408,514.80 × 243,312.80
  4. Step 4: Simplify right side
    272,343.20x = 99,396,879,829.44
  5. Step 5: Solve for x
    x = 99,396,879,829.44/272,343.20
  6. Step 6: Final answer
    x = 364,969.20

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1.5x scale

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.