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Finding the Fourth Proportional to 296,070.80, 443,231.40 and 261,078.80

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Solution

The fourth proportional to 296,070.80, 443,231.40 and 261,078.80 is: 390,846.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,070.80 : 443,231.40 = 261,078.80 : x
  2. Step 2: Convert to fraction form
    296,070.80/443,231.40 = 261,078.80/x
  3. Step 3: Cross multiply
    296,070.80x = 443,231.40 × 261,078.80
  4. Step 4: Simplify right side
    296,070.80x = 115,718,322,034.32
  5. Step 5: Solve for x
    x = 115,718,322,034.32/296,070.80
  6. Step 6: Final answer
    x = 390,846.79

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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.