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Finding the Fourth Proportional to 288,632.47, 398,313.42 and 161,308.07

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Solution

The fourth proportional to 288,632.47, 398,313.42 and 161,308.07 is: 222,605.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,632.47 : 398,313.42 = 161,308.07 : x
  2. Step 2: Convert to fraction form
    288,632.47/398,313.42 = 161,308.07/x
  3. Step 3: Cross multiply
    288,632.47x = 398,313.42 × 161,308.07
  4. Step 4: Simplify right side
    288,632.47x = 64,251,169,035.30
  5. Step 5: Solve for x
    x = 64,251,169,035.30/288,632.47
  6. Step 6: Final answer
    x = 222,605.48

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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.