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Finding the Fourth Proportional to 288,973.60, 398,765.04 and 161,627.20

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Solution

The fourth proportional to 288,973.60, 398,765.04 and 161,627.20 is: 223,035.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,973.60 : 398,765.04 = 161,627.20 : x
  2. Step 2: Convert to fraction form
    288,973.60/398,765.04 = 161,627.20/x
  3. Step 3: Cross multiply
    288,973.60x = 398,765.04 × 161,627.20
  4. Step 4: Simplify right side
    288,973.60x = 64,451,276,873.09
  5. Step 5: Solve for x
    x = 64,451,276,873.09/288,973.60
  6. Step 6: Final answer
    x = 223,035.17

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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.