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Finding the Fourth Proportional to 426,179.04, 639,102.36 and 159,794.40

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Solution

The fourth proportional to 426,179.04, 639,102.36 and 159,794.40 is: 239,629.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,179.04 : 639,102.36 = 159,794.40 : x
  2. Step 2: Convert to fraction form
    426,179.04/639,102.36 = 159,794.40/x
  3. Step 3: Cross multiply
    426,179.04x = 639,102.36 × 159,794.40
  4. Step 4: Simplify right side
    426,179.04x = 102,124,978,154.78
  5. Step 5: Solve for x
    x = 102,124,978,154.78/426,179.04
  6. Step 6: Final answer
    x = 239,629.28

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1.5x scale

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.