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Finding the Fourth Proportional to 288,454.86, 398,067.68 and 161,130.45

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Solution

The fourth proportional to 288,454.86, 398,067.68 and 161,130.45 is: 222,360.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,454.86 : 398,067.68 = 161,130.45 : x
  2. Step 2: Convert to fraction form
    288,454.86/398,067.68 = 161,130.45/x
  3. Step 3: Cross multiply
    288,454.86x = 398,067.68 × 161,130.45
  4. Step 4: Simplify right side
    288,454.86x = 64,140,824,408.86
  5. Step 5: Solve for x
    x = 64,140,824,408.86/288,454.86
  6. Step 6: Final answer
    x = 222,360.01

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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.