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Finding the Fourth Proportional to 288,671.55, 398,350.67 and 159,602.56

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Solution

The fourth proportional to 288,671.55, 398,350.67 and 159,602.56 is: 220,242.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,671.55 : 398,350.67 = 159,602.56 : x
  2. Step 2: Convert to fraction form
    288,671.55/398,350.67 = 159,602.56/x
  3. Step 3: Cross multiply
    288,671.55x = 398,350.67 × 159,602.56
  4. Step 4: Simplify right side
    288,671.55x = 63,577,784,915.83
  5. Step 5: Solve for x
    x = 63,577,784,915.83/288,671.55
  6. Step 6: Final answer
    x = 220,242.65

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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.