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Finding the Fourth Proportional to 288,659.01, 398,342.55 and 161,346.45

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Solution

The fourth proportional to 288,659.01, 398,342.55 and 161,346.45 is: 222,654.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,659.01 : 398,342.55 = 161,346.45 : x
  2. Step 2: Convert to fraction form
    288,659.01/398,342.55 = 161,346.45/x
  3. Step 3: Cross multiply
    288,659.01x = 398,342.55 × 161,346.45
  4. Step 4: Simplify right side
    288,659.01x = 64,271,156,326.45
  5. Step 5: Solve for x
    x = 64,271,156,326.45/288,659.01
  6. Step 6: Final answer
    x = 222,654.25

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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.