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Finding the Fourth Proportional to 247,905.40, 342,109.32 and 134,728.24

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Solution

The fourth proportional to 247,905.40, 342,109.32 and 134,728.24 is: 185,924.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,905.40 : 342,109.32 = 134,728.24 : x
  2. Step 2: Convert to fraction form
    247,905.40/342,109.32 = 134,728.24/x
  3. Step 3: Cross multiply
    247,905.40x = 342,109.32 × 134,728.24
  4. Step 4: Simplify right side
    247,905.40x = 46,091,786,571.20
  5. Step 5: Solve for x
    x = 46,091,786,571.20/247,905.40
  6. Step 6: Final answer
    x = 185,924.90

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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.