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Finding the Fourth Proportional to 340,630.72, 470,107.40 and 187,684.68

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Solution

The fourth proportional to 340,630.72, 470,107.40 and 187,684.68 is: 259,025.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,630.72 : 470,107.40 = 187,684.68 : x
  2. Step 2: Convert to fraction form
    340,630.72/470,107.40 = 187,684.68/x
  3. Step 3: Cross multiply
    340,630.72x = 470,107.40 × 187,684.68
  4. Step 4: Simplify right side
    340,630.72x = 88,231,956,934.63
  5. Step 5: Solve for x
    x = 88,231,956,934.63/340,630.72
  6. Step 6: Final answer
    x = 259,025.25

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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.