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Finding the Fourth Proportional to 288,602.90, 398,270.84 and 161,278.46

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Solution

The fourth proportional to 288,602.90, 398,270.84 and 161,278.46 is: 222,563.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,602.90 : 398,270.84 = 161,278.46 : x
  2. Step 2: Convert to fraction form
    288,602.90/398,270.84 = 161,278.46/x
  3. Step 3: Cross multiply
    288,602.90x = 398,270.84 × 161,278.46
  4. Step 4: Simplify right side
    288,602.90x = 64,232,507,738.11
  5. Step 5: Solve for x
    x = 64,232,507,738.11/288,602.90
  6. Step 6: Final answer
    x = 222,563.63

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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.