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Finding the Fourth Proportional to 287,599.58, 396,869.25 and 158,530.94

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Solution

The fourth proportional to 287,599.58, 396,869.25 and 158,530.94 is: 218,762.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,599.58 : 396,869.25 = 158,530.94 : x
  2. Step 2: Convert to fraction form
    287,599.58/396,869.25 = 158,530.94/x
  3. Step 3: Cross multiply
    287,599.58x = 396,869.25 × 158,530.94
  4. Step 4: Simplify right side
    287,599.58x = 62,916,055,358.00
  5. Step 5: Solve for x
    x = 62,916,055,358.00/287,599.58
  6. Step 6: Final answer
    x = 218,762.68

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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.