Home / 315,140.63-472,715.04-104,778.56

Finding the Fourth Proportional to 315,140.63, 472,715.04 and 104,778.56

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Solution

The fourth proportional to 315,140.63, 472,715.04 and 104,778.56 is: 157,169.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,140.63 : 472,715.04 = 104,778.56 : x
  2. Step 2: Convert to fraction form
    315,140.63/472,715.04 = 104,778.56/x
  3. Step 3: Cross multiply
    315,140.63x = 472,715.04 × 104,778.56
  4. Step 4: Simplify right side
    315,140.63x = 49,530,402,166.87
  5. Step 5: Solve for x
    x = 49,530,402,166.87/315,140.63
  6. Step 6: Final answer
    x = 157,169.21

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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.