Home / 426,123.14-639,159.62-159,861.33

Finding the Fourth Proportional to 426,123.14, 639,159.62 and 159,861.33

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Solution

The fourth proportional to 426,123.14, 639,159.62 and 159,861.33 is: 239,782.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,123.14 : 639,159.62 = 159,861.33 : x
  2. Step 2: Convert to fraction form
    426,123.14/639,159.62 = 159,861.33/x
  3. Step 3: Cross multiply
    426,123.14x = 639,159.62 × 159,861.33
  4. Step 4: Simplify right side
    426,123.14x = 102,176,906,136.19
  5. Step 5: Solve for x
    x = 102,176,906,136.19/426,123.14
  6. Step 6: Final answer
    x = 239,782.58

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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.