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Finding the Fourth Proportional to 426,167.80, 639,251.70 and 248,583.40

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Solution

The fourth proportional to 426,167.80, 639,251.70 and 248,583.40 is: 372,875.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,167.80 : 639,251.70 = 248,583.40 : x
  2. Step 2: Convert to fraction form
    426,167.80/639,251.70 = 248,583.40/x
  3. Step 3: Cross multiply
    426,167.80x = 639,251.70 × 248,583.40
  4. Step 4: Simplify right side
    426,167.80x = 158,907,361,041.78
  5. Step 5: Solve for x
    x = 158,907,361,041.78/426,167.80
  6. Step 6: Final answer
    x = 372,875.10

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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.