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Finding the Fourth Proportional to 668,777.51, 1,003,181.66 and 163,342.68

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Solution

The fourth proportional to 668,777.51, 1,003,181.66 and 163,342.68 is: 245,017.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,777.51 : 1,003,181.66 = 163,342.68 : x
  2. Step 2: Convert to fraction form
    668,777.51/1,003,181.66 = 163,342.68/x
  3. Step 3: Cross multiply
    668,777.51x = 1,003,181.66 × 163,342.68
  4. Step 4: Simplify right side
    668,777.51x = 163,862,380,871.25
  5. Step 5: Solve for x
    x = 163,862,380,871.25/668,777.51
  6. Step 6: Final answer
    x = 245,017.78

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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.