Home / 287,195.67-396,326.68-158,131.46

Finding the Fourth Proportional to 287,195.67, 396,326.68 and 158,131.46

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Solution

The fourth proportional to 287,195.67, 396,326.68 and 158,131.46 is: 218,219.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,195.67 : 396,326.68 = 158,131.46 : x
  2. Step 2: Convert to fraction form
    287,195.67/396,326.68 = 158,131.46/x
  3. Step 3: Cross multiply
    287,195.67x = 396,326.68 × 158,131.46
  4. Step 4: Simplify right side
    287,195.67x = 62,671,717,140.84
  5. Step 5: Solve for x
    x = 62,671,717,140.84/287,195.67
  6. Step 6: Final answer
    x = 218,219.58

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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.