Home / 288,786.48-398,518.37-159,721.59

Finding the Fourth Proportional to 288,786.48, 398,518.37 and 159,721.59

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Solution

The fourth proportional to 288,786.48, 398,518.37 and 159,721.59 is: 220,411.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,786.48 : 398,518.37 = 159,721.59 : x
  2. Step 2: Convert to fraction form
    288,786.48/398,518.37 = 159,721.59/x
  3. Step 3: Cross multiply
    288,786.48x = 398,518.37 × 159,721.59
  4. Step 4: Simplify right side
    288,786.48x = 63,651,986,902.00
  5. Step 5: Solve for x
    x = 63,651,986,902.00/288,786.48
  6. Step 6: Final answer
    x = 220,411.94

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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.