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Finding the Fourth Proportional to 288,419.37, 398,026.71 and 159,366.12

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Solution

The fourth proportional to 288,419.37, 398,026.71 and 159,366.12 is: 219,929.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,419.37 : 398,026.71 = 159,366.12 : x
  2. Step 2: Convert to fraction form
    288,419.37/398,026.71 = 159,366.12/x
  3. Step 3: Cross multiply
    288,419.37x = 398,026.71 × 159,366.12
  4. Step 4: Simplify right side
    288,419.37x = 63,431,972,429.07
  5. Step 5: Solve for x
    x = 63,431,972,429.07/288,419.37
  6. Step 6: Final answer
    x = 219,929.65

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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.