Home / 287,138.34-396,254.70-158,091.84

Finding the Fourth Proportional to 287,138.34, 396,254.70 and 158,091.84

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Solution

The fourth proportional to 287,138.34, 396,254.70 and 158,091.84 is: 218,168.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,138.34 : 396,254.70 = 158,091.84 : x
  2. Step 2: Convert to fraction form
    287,138.34/396,254.70 = 158,091.84/x
  3. Step 3: Cross multiply
    287,138.34x = 396,254.70 × 158,091.84
  4. Step 4: Simplify right side
    287,138.34x = 62,644,634,631.65
  5. Step 5: Solve for x
    x = 62,644,634,631.65/287,138.34
  6. Step 6: Final answer
    x = 218,168.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.