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Finding the Fourth Proportional to 343,321.78, 473,789.75 and 190,366.42

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Solution

The fourth proportional to 343,321.78, 473,789.75 and 190,366.42 is: 262,708.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,321.78 : 473,789.75 = 190,366.42 : x
  2. Step 2: Convert to fraction form
    343,321.78/473,789.75 = 190,366.42/x
  3. Step 3: Cross multiply
    343,321.78x = 473,789.75 × 190,366.42
  4. Step 4: Simplify right side
    343,321.78x = 90,193,657,831.64
  5. Step 5: Solve for x
    x = 90,193,657,831.64/343,321.78
  6. Step 6: Final answer
    x = 262,708.81

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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.