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Finding the Fourth Proportional to 618,485.10, 927,187.65 and 239,664.30

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Solution

The fourth proportional to 618,485.10, 927,187.65 and 239,664.30 is: 359,287.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,485.10 : 927,187.65 = 239,664.30 : x
  2. Step 2: Convert to fraction form
    618,485.10/927,187.65 = 239,664.30/x
  3. Step 3: Cross multiply
    618,485.10x = 927,187.65 × 239,664.30
  4. Step 4: Simplify right side
    618,485.10x = 222,213,779,105.90
  5. Step 5: Solve for x
    x = 222,213,779,105.90/618,485.10
  6. Step 6: Final answer
    x = 359,287.20

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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.