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Finding the Fourth Proportional to 287,727.81, 397,055.28 and 158,671.73

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Solution

The fourth proportional to 287,727.81, 397,055.28 and 158,671.73 is: 218,961.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,727.81 : 397,055.28 = 158,671.73 : x
  2. Step 2: Convert to fraction form
    287,727.81/397,055.28 = 158,671.73/x
  3. Step 3: Cross multiply
    287,727.81x = 397,055.28 × 158,671.73
  4. Step 4: Simplify right side
    287,727.81x = 63,001,447,537.46
  5. Step 5: Solve for x
    x = 63,001,447,537.46/287,727.81
  6. Step 6: Final answer
    x = 218,961.97

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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.