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Finding the Fourth Proportional to 387,673, 581,509.50 and 103,364.52

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Solution

The fourth proportional to 387,673, 581,509.50 and 103,364.52 is: 155,046.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,673 : 581,509.50 = 103,364.52 : x
  2. Step 2: Convert to fraction form
    387,673/581,509.50 = 103,364.52/x
  3. Step 3: Cross multiply
    387,673x = 581,509.50 × 103,364.52
  4. Step 4: Simplify right side
    387,673x = 60,107,450,342.94
  5. Step 5: Solve for x
    x = 60,107,450,342.94/387,673
  6. Step 6: Final answer
    x = 155,046.78

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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.