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Finding the Fourth Proportional to 287,297.48, 396,465.85 and 158,248.24

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Solution

The fourth proportional to 287,297.48, 396,465.85 and 158,248.24 is: 218,380.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,297.48 : 396,465.85 = 158,248.24 : x
  2. Step 2: Convert to fraction form
    287,297.48/396,465.85 = 158,248.24/x
  3. Step 3: Cross multiply
    287,297.48x = 396,465.85 × 158,248.24
  4. Step 4: Simplify right side
    287,297.48x = 62,740,025,199.44
  5. Step 5: Solve for x
    x = 62,740,025,199.44/287,297.48
  6. Step 6: Final answer
    x = 218,380.01

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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.