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Finding the Fourth Proportional to 213,693.60, 320,614.65 and 80,612.22

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Solution

The fourth proportional to 213,693.60, 320,614.65 and 80,612.22 is: 120,946.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,693.60 : 320,614.65 = 80,612.22 : x
  2. Step 2: Convert to fraction form
    213,693.60/320,614.65 = 80,612.22/x
  3. Step 3: Cross multiply
    213,693.60x = 320,614.65 × 80,612.22
  4. Step 4: Simplify right side
    213,693.60x = 25,845,458,701.02
  5. Step 5: Solve for x
    x = 25,845,458,701.02/213,693.60
  6. Step 6: Final answer
    x = 120,946.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.