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Finding the Fourth Proportional to 296,836.41, 445,259.48 and 86,485.89

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Solution

The fourth proportional to 296,836.41, 445,259.48 and 86,485.89 is: 129,730.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,836.41 : 445,259.48 = 86,485.89 : x
  2. Step 2: Convert to fraction form
    296,836.41/445,259.48 = 86,485.89/x
  3. Step 3: Cross multiply
    296,836.41x = 445,259.48 × 86,485.89
  4. Step 4: Simplify right side
    296,836.41x = 38,508,661,976.31
  5. Step 5: Solve for x
    x = 38,508,661,976.31/296,836.41
  6. Step 6: Final answer
    x = 129,730.25

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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.