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Finding the Fourth Proportional to 247,989.15, 342,215.51 and 134,811.90

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Solution

The fourth proportional to 247,989.15, 342,215.51 and 134,811.90 is: 186,035.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,989.15 : 342,215.51 = 134,811.90 : x
  2. Step 2: Convert to fraction form
    247,989.15/342,215.51 = 134,811.90/x
  3. Step 3: Cross multiply
    247,989.15x = 342,215.51 × 134,811.90
  4. Step 4: Simplify right side
    247,989.15x = 46,134,722,438.51
  5. Step 5: Solve for x
    x = 46,134,722,438.51/247,989.15
  6. Step 6: Final answer
    x = 186,035.25

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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.