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Finding the Fourth Proportional to 248,595.57, 343,036.32 and 139,682.61

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Solution

The fourth proportional to 248,595.57, 343,036.32 and 139,682.61 is: 192,747.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,595.57 : 343,036.32 = 139,682.61 : x
  2. Step 2: Convert to fraction form
    248,595.57/343,036.32 = 139,682.61/x
  3. Step 3: Cross multiply
    248,595.57x = 343,036.32 × 139,682.61
  4. Step 4: Simplify right side
    248,595.57x = 47,916,208,502.40
  5. Step 5: Solve for x
    x = 47,916,208,502.40/248,595.57
  6. Step 6: Final answer
    x = 192,747.64

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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.