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Finding the Fourth Proportional to 208,999.60, 313,499.40 and 178,932.40

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Solution

The fourth proportional to 208,999.60, 313,499.40 and 178,932.40 is: 268,398.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,999.60 : 313,499.40 = 178,932.40 : x
  2. Step 2: Convert to fraction form
    208,999.60/313,499.40 = 178,932.40/x
  3. Step 3: Cross multiply
    208,999.60x = 313,499.40 × 178,932.40
  4. Step 4: Simplify right side
    208,999.60x = 56,095,200,040.56
  5. Step 5: Solve for x
    x = 56,095,200,040.56/208,999.60
  6. Step 6: Final answer
    x = 268,398.60

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1.5x scale

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.