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Finding the Fourth Proportional to 406,003.40, 608,745.90 and 169,440.20

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Solution

The fourth proportional to 406,003.40, 608,745.90 and 169,440.20 is: 254,052.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,003.40 : 608,745.90 = 169,440.20 : x
  2. Step 2: Convert to fraction form
    406,003.40/608,745.90 = 169,440.20/x
  3. Step 3: Cross multiply
    406,003.40x = 608,745.90 × 169,440.20
  4. Step 4: Simplify right side
    406,003.40x = 103,146,027,045.18
  5. Step 5: Solve for x
    x = 103,146,027,045.18/406,003.40
  6. Step 6: Final answer
    x = 254,052.13

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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.