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Finding the Fourth Proportional to 426,085.76, 639,127.82 and 248,468.22

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Solution

The fourth proportional to 426,085.76, 639,127.82 and 248,468.22 is: 372,701.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,085.76 : 639,127.82 = 248,468.22 : x
  2. Step 2: Convert to fraction form
    426,085.76/639,127.82 = 248,468.22/x
  3. Step 3: Cross multiply
    426,085.76x = 639,127.82 × 248,468.22
  4. Step 4: Simplify right side
    426,085.76x = 158,802,950,545.54
  5. Step 5: Solve for x
    x = 158,802,950,545.54/426,085.76
  6. Step 6: Final answer
    x = 372,701.85

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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.