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Finding the Fourth Proportional to 248,411.40, 342,807.64 and 135,234.12

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Solution

The fourth proportional to 248,411.40, 342,807.64 and 135,234.12 is: 186,623.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,411.40 : 342,807.64 = 135,234.12 : x
  2. Step 2: Convert to fraction form
    248,411.40/342,807.64 = 135,234.12/x
  3. Step 3: Cross multiply
    248,411.40x = 342,807.64 × 135,234.12
  4. Step 4: Simplify right side
    248,411.40x = 46,359,289,524.68
  5. Step 5: Solve for x
    x = 46,359,289,524.68/248,411.40
  6. Step 6: Final answer
    x = 186,623.04

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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.