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Finding the Fourth Proportional to 266,993.04, 400,426.44 and 98,421.90

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Solution

The fourth proportional to 266,993.04, 400,426.44 and 98,421.90 is: 147,609.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,993.04 : 400,426.44 = 98,421.90 : x
  2. Step 2: Convert to fraction form
    266,993.04/400,426.44 = 98,421.90/x
  3. Step 3: Cross multiply
    266,993.04x = 400,426.44 × 98,421.90
  4. Step 4: Simplify right side
    266,993.04x = 39,410,731,035.04
  5. Step 5: Solve for x
    x = 39,410,731,035.04/266,993.04
  6. Step 6: Final answer
    x = 147,609.58

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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.