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Finding the Fourth Proportional to 666,672.68, 1,000,242.86 and 193,386.44

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Solution

The fourth proportional to 666,672.68, 1,000,242.86 and 193,386.44 is: 290,147.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,672.68 : 1,000,242.86 = 193,386.44 : x
  2. Step 2: Convert to fraction form
    666,672.68/1,000,242.86 = 193,386.44/x
  3. Step 3: Cross multiply
    666,672.68x = 1,000,242.86 × 193,386.44
  4. Step 4: Simplify right side
    666,672.68x = 193,433,405,830.82
  5. Step 5: Solve for x
    x = 193,433,405,830.82/666,672.68
  6. Step 6: Final answer
    x = 290,147.49

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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.