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Finding the Fourth Proportional to 288,838.99, 398,589.33 and 159,782.59

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Solution

The fourth proportional to 288,838.99, 398,589.33 and 159,782.59 is: 220,495.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,838.99 : 398,589.33 = 159,782.59 : x
  2. Step 2: Convert to fraction form
    288,838.99/398,589.33 = 159,782.59/x
  3. Step 3: Cross multiply
    288,838.99x = 398,589.33 × 159,782.59
  4. Step 4: Simplify right side
    288,838.99x = 63,687,635,493.76
  5. Step 5: Solve for x
    x = 63,687,635,493.76/288,838.99
  6. Step 6: Final answer
    x = 220,495.29

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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.