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Finding the Fourth Proportional to 461,321.76, 636,624.43 and 257,372.73

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Solution

The fourth proportional to 461,321.76, 636,624.43 and 257,372.73 is: 355,174.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,321.76 : 636,624.43 = 257,372.73 : x
  2. Step 2: Convert to fraction form
    461,321.76/636,624.43 = 257,372.73/x
  3. Step 3: Cross multiply
    461,321.76x = 636,624.43 × 257,372.73
  4. Step 4: Simplify right side
    461,321.76x = 163,849,767,533.79
  5. Step 5: Solve for x
    x = 163,849,767,533.79/461,321.76
  6. Step 6: Final answer
    x = 355,174.59

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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.