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Finding the Fourth Proportional to 288,759.06, 398,476.02 and 159,689.16

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Solution

The fourth proportional to 288,759.06, 398,476.02 and 159,689.16 is: 220,364.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,759.06 : 398,476.02 = 159,689.16 : x
  2. Step 2: Convert to fraction form
    288,759.06/398,476.02 = 159,689.16/x
  3. Step 3: Cross multiply
    288,759.06x = 398,476.02 × 159,689.16
  4. Step 4: Simplify right side
    288,759.06x = 63,632,300,913.94
  5. Step 5: Solve for x
    x = 63,632,300,913.94/288,759.06
  6. Step 6: Final answer
    x = 220,364.69

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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.