Home / 287,386.47-396,589.83-158,322.39

Finding the Fourth Proportional to 287,386.47, 396,589.83 and 158,322.39

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Solution

The fourth proportional to 287,386.47, 396,589.83 and 158,322.39 is: 218,482.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,386.47 : 396,589.83 = 158,322.39 : x
  2. Step 2: Convert to fraction form
    287,386.47/396,589.83 = 158,322.39/x
  3. Step 3: Cross multiply
    287,386.47x = 396,589.83 × 158,322.39
  4. Step 4: Simplify right side
    287,386.47x = 62,789,049,735.29
  5. Step 5: Solve for x
    x = 62,789,049,735.29/287,386.47
  6. Step 6: Final answer
    x = 218,482.97

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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.