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Finding the Fourth Proportional to 296,969.80, 445,407.30 and 86,558.52

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Solution

The fourth proportional to 296,969.80, 445,407.30 and 86,558.52 is: 129,823.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,969.80 : 445,407.30 = 86,558.52 : x
  2. Step 2: Convert to fraction form
    296,969.80/445,407.30 = 86,558.52/x
  3. Step 3: Cross multiply
    296,969.80x = 445,407.30 × 86,558.52
  4. Step 4: Simplify right side
    296,969.80x = 38,553,796,685.20
  5. Step 5: Solve for x
    x = 38,553,796,685.20/296,969.80
  6. Step 6: Final answer
    x = 129,823.96

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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.