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Finding the Fourth Proportional to 519,710.20, 779,455.95 and 220,200.55

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Solution

The fourth proportional to 519,710.20, 779,455.95 and 220,200.55 is: 330,254.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,710.20 : 779,455.95 = 220,200.55 : x
  2. Step 2: Convert to fraction form
    519,710.20/779,455.95 = 220,200.55/x
  3. Step 3: Cross multiply
    519,710.20x = 779,455.95 × 220,200.55
  4. Step 4: Simplify right side
    519,710.20x = 171,636,628,890.77
  5. Step 5: Solve for x
    x = 171,636,628,890.77/519,710.20
  6. Step 6: Final answer
    x = 330,254.49

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1.5x scale

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.