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Finding the Fourth Proportional to 212,224.75, 292,911.75 and 121,641.43

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Solution

The fourth proportional to 212,224.75, 292,911.75 and 121,641.43 is: 167,889.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,224.75 : 292,911.75 = 121,641.43 : x
  2. Step 2: Convert to fraction form
    212,224.75/292,911.75 = 121,641.43/x
  3. Step 3: Cross multiply
    212,224.75x = 292,911.75 × 121,641.43
  4. Step 4: Simplify right side
    212,224.75x = 35,630,204,133.80
  5. Step 5: Solve for x
    x = 35,630,204,133.80/212,224.75
  6. Step 6: Final answer
    x = 167,889.01

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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.