Home / 287,144.30-396,152.85-286,701.44

Finding the Fourth Proportional to 287,144.30, 396,152.85 and 286,701.44

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Solution

The fourth proportional to 287,144.30, 396,152.85 and 286,701.44 is: 395,541.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,144.30 : 396,152.85 = 286,701.44 : x
  2. Step 2: Convert to fraction form
    287,144.30/396,152.85 = 286,701.44/x
  3. Step 3: Cross multiply
    287,144.30x = 396,152.85 × 286,701.44
  4. Step 4: Simplify right side
    287,144.30x = 113,577,592,555.10
  5. Step 5: Solve for x
    x = 113,577,592,555.10/287,144.30
  6. Step 6: Final answer
    x = 395,541.87

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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.