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Finding the Fourth Proportional to 367,071.30, 550,807.56 and 142,440.57

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Solution

The fourth proportional to 367,071.30, 550,807.56 and 142,440.57 is: 213,738.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,071.30 : 550,807.56 = 142,440.57 : x
  2. Step 2: Convert to fraction form
    367,071.30/550,807.56 = 142,440.57/x
  3. Step 3: Cross multiply
    367,071.30x = 550,807.56 × 142,440.57
  4. Step 4: Simplify right side
    367,071.30x = 78,457,342,806.71
  5. Step 5: Solve for x
    x = 78,457,342,806.71/367,071.30
  6. Step 6: Final answer
    x = 213,738.70

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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.