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Finding the Fourth Proportional to 255,220.80, 352,329.12 and 159,780.48

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Solution

The fourth proportional to 255,220.80, 352,329.12 and 159,780.48 is: 220,574.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,220.80 : 352,329.12 = 159,780.48 : x
  2. Step 2: Convert to fraction form
    255,220.80/352,329.12 = 159,780.48/x
  3. Step 3: Cross multiply
    255,220.80x = 352,329.12 × 159,780.48
  4. Step 4: Simplify right side
    255,220.80x = 56,295,315,911.58
  5. Step 5: Solve for x
    x = 56,295,315,911.58/255,220.80
  6. Step 6: Final answer
    x = 220,574.95

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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.