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Finding the Fourth Proportional to 519,552.80, 778,897.20 and 220,263.20

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Solution

The fourth proportional to 519,552.80, 778,897.20 and 220,263.20 is: 330,211.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,552.80 : 778,897.20 = 220,263.20 : x
  2. Step 2: Convert to fraction form
    519,552.80/778,897.20 = 220,263.20/x
  3. Step 3: Cross multiply
    519,552.80x = 778,897.20 × 220,263.20
  4. Step 4: Simplify right side
    519,552.80x = 171,562,389,743.04
  5. Step 5: Solve for x
    x = 171,562,389,743.04/519,552.80
  6. Step 6: Final answer
    x = 330,211.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.