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Finding the Fourth Proportional to 288,490.63, 398,132.31 and 173,805.38

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Solution

The fourth proportional to 288,490.63, 398,132.31 and 173,805.38 is: 239,860.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,490.63 : 398,132.31 = 173,805.38 : x
  2. Step 2: Convert to fraction form
    288,490.63/398,132.31 = 173,805.38/x
  3. Step 3: Cross multiply
    288,490.63x = 398,132.31 × 173,805.38
  4. Step 4: Simplify right side
    288,490.63x = 69,197,536,606.28
  5. Step 5: Solve for x
    x = 69,197,536,606.28/288,490.63
  6. Step 6: Final answer
    x = 239,860.60

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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.