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Finding the Fourth Proportional to 636,670.20, 955,005.30 and 257,772.45

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Solution

The fourth proportional to 636,670.20, 955,005.30 and 257,772.45 is: 386,658.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,670.20 : 955,005.30 = 257,772.45 : x
  2. Step 2: Convert to fraction form
    636,670.20/955,005.30 = 257,772.45/x
  3. Step 3: Cross multiply
    636,670.20x = 955,005.30 × 257,772.45
  4. Step 4: Simplify right side
    636,670.20x = 246,174,055,943.99
  5. Step 5: Solve for x
    x = 246,174,055,943.99/636,670.20
  6. Step 6: Final answer
    x = 386,658.68

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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.