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Finding the Fourth Proportional to 387,313.57, 580,969.90 and 134,594.07

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Solution

The fourth proportional to 387,313.57, 580,969.90 and 134,594.07 is: 201,890.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,313.57 : 580,969.90 = 134,594.07 : x
  2. Step 2: Convert to fraction form
    387,313.57/580,969.90 = 134,594.07/x
  3. Step 3: Cross multiply
    387,313.57x = 580,969.90 × 134,594.07
  4. Step 4: Simplify right side
    387,313.57x = 78,195,103,888.96
  5. Step 5: Solve for x
    x = 78,195,103,888.96/387,313.57
  6. Step 6: Final answer
    x = 201,890.95

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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.