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Finding the Fourth Proportional to 519,745.20, 779,552.10 and 164,762.70

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Solution

The fourth proportional to 519,745.20, 779,552.10 and 164,762.70 is: 247,123.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,745.20 : 779,552.10 = 164,762.70 : x
  2. Step 2: Convert to fraction form
    519,745.20/779,552.10 = 164,762.70/x
  3. Step 3: Cross multiply
    519,745.20x = 779,552.10 × 164,762.70
  4. Step 4: Simplify right side
    519,745.20x = 128,441,108,786.67
  5. Step 5: Solve for x
    x = 128,441,108,786.67/519,745.20
  6. Step 6: Final answer
    x = 247,123.22

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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.