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Finding the Fourth Proportional to 519,166.79, 778,750.20 and 140,087.52

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Solution

The fourth proportional to 519,166.79, 778,750.20 and 140,087.52 is: 210,131.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,166.79 : 778,750.20 = 140,087.52 : x
  2. Step 2: Convert to fraction form
    519,166.79/778,750.20 = 140,087.52/x
  3. Step 3: Cross multiply
    519,166.79x = 778,750.20 × 140,087.52
  4. Step 4: Simplify right side
    519,166.79x = 109,093,184,217.50
  5. Step 5: Solve for x
    x = 109,093,184,217.50/519,166.79
  6. Step 6: Final answer
    x = 210,131.29

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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.