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Finding the Fourth Proportional to 266,971.02, 400,556.61 and 138,807.06

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Solution

The fourth proportional to 266,971.02, 400,556.61 and 138,807.06 is: 208,262.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,971.02 : 400,556.61 = 138,807.06 : x
  2. Step 2: Convert to fraction form
    266,971.02/400,556.61 = 138,807.06/x
  3. Step 3: Cross multiply
    266,971.02x = 400,556.61 × 138,807.06
  4. Step 4: Simplify right side
    266,971.02x = 55,600,085,397.67
  5. Step 5: Solve for x
    x = 55,600,085,397.67/266,971.02
  6. Step 6: Final answer
    x = 208,262.62

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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.