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Finding the Fourth Proportional to 287,958.82, 431,601.85 and 216,652.33

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Solution

The fourth proportional to 287,958.82, 431,601.85 and 216,652.33 is: 324,725.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,958.82 : 431,601.85 = 216,652.33 : x
  2. Step 2: Convert to fraction form
    287,958.82/431,601.85 = 216,652.33/x
  3. Step 3: Cross multiply
    287,958.82x = 431,601.85 × 216,652.33
  4. Step 4: Simplify right side
    287,958.82x = 93,507,544,663.83
  5. Step 5: Solve for x
    x = 93,507,544,663.83/287,958.82
  6. Step 6: Final answer
    x = 324,725.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.