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Finding the Fourth Proportional to 235,439.40, 353,159.10 and 168,738.60

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Solution

The fourth proportional to 235,439.40, 353,159.10 and 168,738.60 is: 253,107.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,439.40 : 353,159.10 = 168,738.60 : x
  2. Step 2: Convert to fraction form
    235,439.40/353,159.10 = 168,738.60/x
  3. Step 3: Cross multiply
    235,439.40x = 353,159.10 × 168,738.60
  4. Step 4: Simplify right side
    235,439.40x = 59,591,572,111.26
  5. Step 5: Solve for x
    x = 59,591,572,111.26/235,439.40
  6. Step 6: Final answer
    x = 253,107.90

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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.