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Finding the Fourth Proportional to 247,953.40, 372,707.70 and 243,287.80

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Solution

The fourth proportional to 247,953.40, 372,707.70 and 243,287.80 is: 365,694.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,953.40 : 372,707.70 = 243,287.80 : x
  2. Step 2: Convert to fraction form
    247,953.40/372,707.70 = 243,287.80/x
  3. Step 3: Cross multiply
    247,953.40x = 372,707.70 × 243,287.80
  4. Step 4: Simplify right side
    247,953.40x = 90,675,236,376.06
  5. Step 5: Solve for x
    x = 90,675,236,376.06/247,953.40
  6. Step 6: Final answer
    x = 365,694.67

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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.