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Finding the Fourth Proportional to 519,795.88, 779,682.30 and 145,809.16

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Solution

The fourth proportional to 519,795.88, 779,682.30 and 145,809.16 is: 218,710.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,795.88 : 779,682.30 = 145,809.16 : x
  2. Step 2: Convert to fraction form
    519,795.88/779,682.30 = 145,809.16/x
  3. Step 3: Cross multiply
    519,795.88x = 779,682.30 × 145,809.16
  4. Step 4: Simplify right side
    519,795.88x = 113,684,821,229.87
  5. Step 5: Solve for x
    x = 113,684,821,229.87/519,795.88
  6. Step 6: Final answer
    x = 218,710.51

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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.