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Finding the Fourth Proportional to 287,281.80, 396,518.64 and 166,403.52

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Solution

The fourth proportional to 287,281.80, 396,518.64 and 166,403.52 is: 229,677.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,281.80 : 396,518.64 = 166,403.52 : x
  2. Step 2: Convert to fraction form
    287,281.80/396,518.64 = 166,403.52/x
  3. Step 3: Cross multiply
    287,281.80x = 396,518.64 × 166,403.52
  4. Step 4: Simplify right side
    287,281.80x = 65,982,097,441.61
  5. Step 5: Solve for x
    x = 65,982,097,441.61/287,281.80
  6. Step 6: Final answer
    x = 229,677.26

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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.