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Finding the Fourth Proportional to 247,378.86, 341,382.87 and 139,946.67

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Solution

The fourth proportional to 247,378.86, 341,382.87 and 139,946.67 is: 193,126.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,378.86 : 341,382.87 = 139,946.67 : x
  2. Step 2: Convert to fraction form
    247,378.86/341,382.87 = 139,946.67/x
  3. Step 3: Cross multiply
    247,378.86x = 341,382.87 × 139,946.67
  4. Step 4: Simplify right side
    247,378.86x = 47,775,395,851.54
  5. Step 5: Solve for x
    x = 47,775,395,851.54/247,378.86
  6. Step 6: Final answer
    x = 193,126.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.