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Finding the Fourth Proportional to 519,908.58, 779,860.41 and 140,828.58

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Solution

The fourth proportional to 519,908.58, 779,860.41 and 140,828.58 is: 211,242.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,908.58 : 779,860.41 = 140,828.58 : x
  2. Step 2: Convert to fraction form
    519,908.58/779,860.41 = 140,828.58/x
  3. Step 3: Cross multiply
    519,908.58x = 779,860.41 × 140,828.58
  4. Step 4: Simplify right side
    519,908.58x = 109,826,634,138.52
  5. Step 5: Solve for x
    x = 109,826,634,138.52/519,908.58
  6. Step 6: Final answer
    x = 211,242.20

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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.