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Finding the Fourth Proportional to 288,672.89, 398,352.43 and 159,603.84

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Solution

The fourth proportional to 288,672.89, 398,352.43 and 159,603.84 is: 220,244.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,672.89 : 398,352.43 = 159,603.84 : x
  2. Step 2: Convert to fraction form
    288,672.89/398,352.43 = 159,603.84/x
  3. Step 3: Cross multiply
    288,672.89x = 398,352.43 × 159,603.84
  4. Step 4: Simplify right side
    288,672.89x = 63,578,577,700.84
  5. Step 5: Solve for x
    x = 63,578,577,700.84/288,672.89
  6. Step 6: Final answer
    x = 220,244.37

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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.