Home / 387,405.06-581,063.85-134,642.94

Finding the Fourth Proportional to 387,405.06, 581,063.85 and 134,642.94

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Solution

The fourth proportional to 387,405.06, 581,063.85 and 134,642.94 is: 201,949.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,405.06 : 581,063.85 = 134,642.94 : x
  2. Step 2: Convert to fraction form
    387,405.06/581,063.85 = 134,642.94/x
  3. Step 3: Cross multiply
    387,405.06x = 581,063.85 × 134,642.94
  4. Step 4: Simplify right side
    387,405.06x = 78,236,145,091.72
  5. Step 5: Solve for x
    x = 78,236,145,091.72/387,405.06
  6. Step 6: Final answer
    x = 201,949.21

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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.