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Finding the Fourth Proportional to 288,926.99, 398,709.16 and 159,863.41

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Solution

The fourth proportional to 288,926.99, 398,709.16 and 159,863.41 is: 220,605.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,926.99 : 398,709.16 = 159,863.41 : x
  2. Step 2: Convert to fraction form
    288,926.99/398,709.16 = 159,863.41/x
  3. Step 3: Cross multiply
    288,926.99x = 398,709.16 × 159,863.41
  4. Step 4: Simplify right side
    288,926.99x = 63,739,005,915.84
  5. Step 5: Solve for x
    x = 63,739,005,915.84/288,926.99
  6. Step 6: Final answer
    x = 220,605.93

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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.