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Finding the Fourth Proportional to 263,276.60, 394,914.90 and 156,988.40

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Solution

The fourth proportional to 263,276.60, 394,914.90 and 156,988.40 is: 235,482.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,276.60 : 394,914.90 = 156,988.40 : x
  2. Step 2: Convert to fraction form
    263,276.60/394,914.90 = 156,988.40/x
  3. Step 3: Cross multiply
    263,276.60x = 394,914.90 × 156,988.40
  4. Step 4: Simplify right side
    263,276.60x = 61,997,058,287.16
  5. Step 5: Solve for x
    x = 61,997,058,287.16/263,276.60
  6. Step 6: Final answer
    x = 235,482.60

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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.