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Finding the Fourth Proportional to 236,854.87, 355,288.78 and 79,077.67

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Solution

The fourth proportional to 236,854.87, 355,288.78 and 79,077.67 is: 118,618.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,854.87 : 355,288.78 = 79,077.67 : x
  2. Step 2: Convert to fraction form
    236,854.87/355,288.78 = 79,077.67/x
  3. Step 3: Cross multiply
    236,854.87x = 355,288.78 × 79,077.67
  4. Step 4: Simplify right side
    236,854.87x = 28,095,408,110.17
  5. Step 5: Solve for x
    x = 28,095,408,110.17/236,854.87
  6. Step 6: Final answer
    x = 118,618.66

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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.