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Finding the Fourth Proportional to 247,940.32, 342,155.60 and 134,762.72

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Solution

The fourth proportional to 247,940.32, 342,155.60 and 134,762.72 is: 185,971.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,940.32 : 342,155.60 = 134,762.72 : x
  2. Step 2: Convert to fraction form
    247,940.32/342,155.60 = 134,762.72/x
  3. Step 3: Cross multiply
    247,940.32x = 342,155.60 × 134,762.72
  4. Step 4: Simplify right side
    247,940.32x = 46,109,819,319.23
  5. Step 5: Solve for x
    x = 46,109,819,319.23/247,940.32
  6. Step 6: Final answer
    x = 185,971.44

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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.