Home / 287,558.72-396,705.84-172,882.16

Finding the Fourth Proportional to 287,558.72, 396,705.84 and 172,882.16

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Solution

The fourth proportional to 287,558.72, 396,705.84 and 172,882.16 is: 238,502.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,558.72 : 396,705.84 = 172,882.16 : x
  2. Step 2: Convert to fraction form
    287,558.72/396,705.84 = 172,882.16/x
  3. Step 3: Cross multiply
    287,558.72x = 396,705.84 × 172,882.16
  4. Step 4: Simplify right side
    287,558.72x = 68,583,362,503.81
  5. Step 5: Solve for x
    x = 68,583,362,503.81/287,558.72
  6. Step 6: Final answer
    x = 238,502.11

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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.