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Finding the Fourth Proportional to 426,120.48, 639,159.96 and 159,860.25

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Solution

The fourth proportional to 426,120.48, 639,159.96 and 159,860.25 is: 239,782.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,120.48 : 639,159.96 = 159,860.25 : x
  2. Step 2: Convert to fraction form
    426,120.48/639,159.96 = 159,860.25/x
  3. Step 3: Cross multiply
    426,120.48x = 639,159.96 × 159,860.25
  4. Step 4: Simplify right side
    426,120.48x = 102,176,270,995.59
  5. Step 5: Solve for x
    x = 102,176,270,995.59/426,120.48
  6. Step 6: Final answer
    x = 239,782.59

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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.