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Finding the Fourth Proportional to 266,987.16, 400,351.14 and 100,788.12

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Solution

The fourth proportional to 266,987.16, 400,351.14 and 100,788.12 is: 151,133.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,987.16 : 400,351.14 = 100,788.12 : x
  2. Step 2: Convert to fraction form
    266,987.16/400,351.14 = 100,788.12/x
  3. Step 3: Cross multiply
    266,987.16x = 400,351.14 × 100,788.12
  4. Step 4: Simplify right side
    266,987.16x = 40,350,638,740.46
  5. Step 5: Solve for x
    x = 40,350,638,740.46/266,987.16
  6. Step 6: Final answer
    x = 151,133.26

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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.