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Finding the Fourth Proportional to 342,518.37, 513,826.70 and 105,879.44

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Solution

The fourth proportional to 342,518.37, 513,826.70 and 105,879.44 is: 158,834.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,518.37 : 513,826.70 = 105,879.44 : x
  2. Step 2: Convert to fraction form
    342,518.37/513,826.70 = 105,879.44/x
  3. Step 3: Cross multiply
    342,518.37x = 513,826.70 × 105,879.44
  4. Step 4: Simplify right side
    342,518.37x = 54,403,680,154.52
  5. Step 5: Solve for x
    x = 54,403,680,154.52/342,518.37
  6. Step 6: Final answer
    x = 158,834.34

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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.