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Finding the Fourth Proportional to 340,354.44, 469,680.90 and 213,100.20

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Solution

The fourth proportional to 340,354.44, 469,680.90 and 213,100.20 is: 294,073.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,354.44 : 469,680.90 = 213,100.20 : x
  2. Step 2: Convert to fraction form
    340,354.44/469,680.90 = 213,100.20/x
  3. Step 3: Cross multiply
    340,354.44x = 469,680.90 × 213,100.20
  4. Step 4: Simplify right side
    340,354.44x = 100,089,093,726.18
  5. Step 5: Solve for x
    x = 100,089,093,726.18/340,354.44
  6. Step 6: Final answer
    x = 294,073.12

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1.5x scale

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.