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Finding the Fourth Proportional to 288,661.50, 398,366.78 and 159,597.60

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Solution

The fourth proportional to 288,661.50, 398,366.78 and 159,597.60 is: 220,252.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,661.50 : 398,366.78 = 159,597.60 : x
  2. Step 2: Convert to fraction form
    288,661.50/398,366.78 = 159,597.60/x
  3. Step 3: Cross multiply
    288,661.50x = 398,366.78 × 159,597.60
  4. Step 4: Simplify right side
    288,661.50x = 63,578,381,209.74
  5. Step 5: Solve for x
    x = 63,578,381,209.74/288,661.50
  6. Step 6: Final answer
    x = 220,252.38

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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.