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Finding the Fourth Proportional to 426,058.92, 639,175.80 and 173,338.74

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Solution

The fourth proportional to 426,058.92, 639,175.80 and 173,338.74 is: 260,043.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,058.92 : 639,175.80 = 173,338.74 : x
  2. Step 2: Convert to fraction form
    426,058.92/639,175.80 = 173,338.74/x
  3. Step 3: Cross multiply
    426,058.92x = 639,175.80 × 173,338.74
  4. Step 4: Simplify right side
    426,058.92x = 110,793,927,810.49
  5. Step 5: Solve for x
    x = 110,793,927,810.49/426,058.92
  6. Step 6: Final answer
    x = 260,043.68

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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.