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Finding the Fourth Proportional to 440,949.78, 608,509.89 and 239,745.30

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Solution

The fourth proportional to 440,949.78, 608,509.89 and 239,745.30 is: 330,848.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,949.78 : 608,509.89 = 239,745.30 : x
  2. Step 2: Convert to fraction form
    440,949.78/608,509.89 = 239,745.30/x
  3. Step 3: Cross multiply
    440,949.78x = 608,509.89 × 239,745.30
  4. Step 4: Simplify right side
    440,949.78x = 145,887,386,131.02
  5. Step 5: Solve for x
    x = 145,887,386,131.02/440,949.78
  6. Step 6: Final answer
    x = 330,848.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.