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Finding the Fourth Proportional to 387,667.94, 581,512.86 and 107,185.19

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Solution

The fourth proportional to 387,667.94, 581,512.86 and 107,185.19 is: 160,780.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,667.94 : 581,512.86 = 107,185.19 : x
  2. Step 2: Convert to fraction form
    387,667.94/581,512.86 = 107,185.19/x
  3. Step 3: Cross multiply
    387,667.94x = 581,512.86 × 107,185.19
  4. Step 4: Simplify right side
    387,667.94x = 62,329,563,478.98
  5. Step 5: Solve for x
    x = 62,329,563,478.98/387,667.94
  6. Step 6: Final answer
    x = 160,780.81

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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.