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Finding the Fourth Proportional to 800,425.13, 1,200,548.91 and 201,386.39

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Solution

The fourth proportional to 800,425.13, 1,200,548.91 and 201,386.39 is: 302,057.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,425.13 : 1,200,548.91 = 201,386.39 : x
  2. Step 2: Convert to fraction form
    800,425.13/1,200,548.91 = 201,386.39/x
  3. Step 3: Cross multiply
    800,425.13x = 1,200,548.91 × 201,386.39
  4. Step 4: Simplify right side
    800,425.13x = 241,774,211,003.34
  5. Step 5: Solve for x
    x = 241,774,211,003.34/800,425.13
  6. Step 6: Final answer
    x = 302,057.25

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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.