Home / 287,638.98-396,943.62-160,322.64

Finding the Fourth Proportional to 287,638.98, 396,943.62 and 160,322.64

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Solution

The fourth proportional to 287,638.98, 396,943.62 and 160,322.64 is: 221,246.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,638.98 : 396,943.62 = 160,322.64 : x
  2. Step 2: Convert to fraction form
    287,638.98/396,943.62 = 160,322.64/x
  3. Step 3: Cross multiply
    287,638.98x = 396,943.62 × 160,322.64
  4. Step 4: Simplify right side
    287,638.98x = 63,639,049,089.56
  5. Step 5: Solve for x
    x = 63,639,049,089.56/287,638.98
  6. Step 6: Final answer
    x = 221,246.26

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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.