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Finding the Fourth Proportional to 288,995.30, 398,893.72 and 168,160

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Solution

The fourth proportional to 288,995.30, 398,893.72 and 168,160 is: 232,107.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,995.30 : 398,893.72 = 168,160 : x
  2. Step 2: Convert to fraction form
    288,995.30/398,893.72 = 168,160/x
  3. Step 3: Cross multiply
    288,995.30x = 398,893.72 × 168,160
  4. Step 4: Simplify right side
    288,995.30x = 67,077,967,955.20
  5. Step 5: Solve for x
    x = 67,077,967,955.20/288,995.30
  6. Step 6: Final answer
    x = 232,107.47

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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.