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Finding the Fourth Proportional to 178,990.76, 268,978.23 and 167,287.57

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Solution

The fourth proportional to 178,990.76, 268,978.23 and 167,287.57 is: 251,391.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,990.76 : 268,978.23 = 167,287.57 : x
  2. Step 2: Convert to fraction form
    178,990.76/268,978.23 = 167,287.57/x
  3. Step 3: Cross multiply
    178,990.76x = 268,978.23 × 167,287.57
  4. Step 4: Simplify right side
    178,990.76x = 44,996,713,807.16
  5. Step 5: Solve for x
    x = 44,996,713,807.16/178,990.76
  6. Step 6: Final answer
    x = 251,391.26

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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.