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Finding the Fourth Proportional to 247,940.72, 342,162.08 and 134,763.76

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Solution

The fourth proportional to 247,940.72, 342,162.08 and 134,763.76 is: 185,976.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,940.72 : 342,162.08 = 134,763.76 : x
  2. Step 2: Convert to fraction form
    247,940.72/342,162.08 = 134,763.76/x
  3. Step 3: Cross multiply
    247,940.72x = 342,162.08 × 134,763.76
  4. Step 4: Simplify right side
    247,940.72x = 46,111,048,430.22
  5. Step 5: Solve for x
    x = 46,111,048,430.22/247,940.72
  6. Step 6: Final answer
    x = 185,976.10

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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.