Home / 287,264.75-396,428.09-159,943.08

Finding the Fourth Proportional to 287,264.75, 396,428.09 and 159,943.08

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Solution

The fourth proportional to 287,264.75, 396,428.09 and 159,943.08 is: 220,722.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,264.75 : 396,428.09 = 159,943.08 : x
  2. Step 2: Convert to fraction form
    287,264.75/396,428.09 = 159,943.08/x
  3. Step 3: Cross multiply
    287,264.75x = 396,428.09 × 159,943.08
  4. Step 4: Simplify right side
    287,264.75x = 63,405,929,713.12
  5. Step 5: Solve for x
    x = 63,405,929,713.12/287,264.75
  6. Step 6: Final answer
    x = 220,722.97

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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.