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Finding the Fourth Proportional to 178,749.40, 267,540.90 and 143,368.60

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Solution

The fourth proportional to 178,749.40, 267,540.90 and 143,368.60 is: 214,585.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,749.40 : 267,540.90 = 143,368.60 : x
  2. Step 2: Convert to fraction form
    178,749.40/267,540.90 = 143,368.60/x
  3. Step 3: Cross multiply
    178,749.40x = 267,540.90 × 143,368.60
  4. Step 4: Simplify right side
    178,749.40x = 38,356,964,275.74
  5. Step 5: Solve for x
    x = 38,356,964,275.74/178,749.40
  6. Step 6: Final answer
    x = 214,585.14

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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.