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Finding the Fourth Proportional to 340,833.79, 470,329.21 and 187,863.56

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Solution

The fourth proportional to 340,833.79, 470,329.21 and 187,863.56 is: 259,239.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,833.79 : 470,329.21 = 187,863.56 : x
  2. Step 2: Convert to fraction form
    340,833.79/470,329.21 = 187,863.56/x
  3. Step 3: Cross multiply
    340,833.79x = 470,329.21 × 187,863.56
  4. Step 4: Simplify right side
    340,833.79x = 88,357,719,762.59
  5. Step 5: Solve for x
    x = 88,357,719,762.59/340,833.79
  6. Step 6: Final answer
    x = 259,239.91

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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.