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Finding the Fourth Proportional to 287,259.39, 396,417.96 and 166,424.03

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Solution

The fourth proportional to 287,259.39, 396,417.96 and 166,424.03 is: 229,665.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,259.39 : 396,417.96 = 166,424.03 : x
  2. Step 2: Convert to fraction form
    287,259.39/396,417.96 = 166,424.03/x
  3. Step 3: Cross multiply
    287,259.39x = 396,417.96 × 166,424.03
  4. Step 4: Simplify right side
    287,259.39x = 65,973,474,467.58
  5. Step 5: Solve for x
    x = 65,973,474,467.58/287,259.39
  6. Step 6: Final answer
    x = 229,665.16

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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.