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Finding the Fourth Proportional to 248,628.66, 343,081.77 and 139,715.70

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Solution

The fourth proportional to 248,628.66, 343,081.77 and 139,715.70 is: 192,793.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,628.66 : 343,081.77 = 139,715.70 : x
  2. Step 2: Convert to fraction form
    248,628.66/343,081.77 = 139,715.70/x
  3. Step 3: Cross multiply
    248,628.66x = 343,081.77 × 139,715.70
  4. Step 4: Simplify right side
    248,628.66x = 47,933,909,652.79
  5. Step 5: Solve for x
    x = 47,933,909,652.79/248,628.66
  6. Step 6: Final answer
    x = 192,793.18

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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.