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Finding the Fourth Proportional to 266,999.51, 400,656.81 and 98,638.99

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Solution

The fourth proportional to 266,999.51, 400,656.81 and 98,638.99 is: 148,016.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,999.51 : 400,656.81 = 98,638.99 : x
  2. Step 2: Convert to fraction form
    266,999.51/400,656.81 = 98,638.99/x
  3. Step 3: Cross multiply
    266,999.51x = 400,656.81 × 98,638.99
  4. Step 4: Simplify right side
    266,999.51x = 39,520,383,075.02
  5. Step 5: Solve for x
    x = 39,520,383,075.02/266,999.51
  6. Step 6: Final answer
    x = 148,016.69

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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.