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Finding the Fourth Proportional to 461,058.70, 636,263.78 and 257,122.51

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Solution

The fourth proportional to 461,058.70, 636,263.78 and 257,122.51 is: 354,830.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,058.70 : 636,263.78 = 257,122.51 : x
  2. Step 2: Convert to fraction form
    461,058.70/636,263.78 = 257,122.51/x
  3. Step 3: Cross multiply
    461,058.70x = 636,263.78 × 257,122.51
  4. Step 4: Simplify right side
    461,058.70x = 163,597,740,135.69
  5. Step 5: Solve for x
    x = 163,597,740,135.69/461,058.70
  6. Step 6: Final answer
    x = 354,830.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.