Home / 426,739.54-640,204.64-160,502.36

Finding the Fourth Proportional to 426,739.54, 640,204.64 and 160,502.36

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Solution

The fourth proportional to 426,739.54, 640,204.64 and 160,502.36 is: 240,789.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,739.54 : 640,204.64 = 160,502.36 : x
  2. Step 2: Convert to fraction form
    426,739.54/640,204.64 = 160,502.36/x
  3. Step 3: Cross multiply
    426,739.54x = 640,204.64 × 160,502.36
  4. Step 4: Simplify right side
    426,739.54x = 102,754,355,351.04
  5. Step 5: Solve for x
    x = 102,754,355,351.04/426,739.54
  6. Step 6: Final answer
    x = 240,789.39

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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.