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Finding the Fourth Proportional to 292,241.45, 438,366.51 and 81,866.09

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Solution

The fourth proportional to 292,241.45, 438,366.51 and 81,866.09 is: 122,800.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,241.45 : 438,366.51 = 81,866.09 : x
  2. Step 2: Convert to fraction form
    292,241.45/438,366.51 = 81,866.09/x
  3. Step 3: Cross multiply
    292,241.45x = 438,366.51 × 81,866.09
  4. Step 4: Simplify right side
    292,241.45x = 35,887,352,160.65
  5. Step 5: Solve for x
    x = 35,887,352,160.65/292,241.45
  6. Step 6: Final answer
    x = 122,800.35

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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.