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Finding the Fourth Proportional to 397,053.89, 547,932.57 and 215,762.39

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Solution

The fourth proportional to 397,053.89, 547,932.57 and 215,762.39 is: 297,751.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,053.89 : 547,932.57 = 215,762.39 : x
  2. Step 2: Convert to fraction form
    397,053.89/547,932.57 = 215,762.39/x
  3. Step 3: Cross multiply
    397,053.89x = 547,932.57 × 215,762.39
  4. Step 4: Simplify right side
    397,053.89x = 118,223,240,862.04
  5. Step 5: Solve for x
    x = 118,223,240,862.04/397,053.89
  6. Step 6: Final answer
    x = 297,751.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.