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Finding the Fourth Proportional to 272,355.64, 375,850.76 and 153,123.64

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Solution

The fourth proportional to 272,355.64, 375,850.76 and 153,123.64 is: 211,310.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,355.64 : 375,850.76 = 153,123.64 : x
  2. Step 2: Convert to fraction form
    272,355.64/375,850.76 = 153,123.64/x
  3. Step 3: Cross multiply
    272,355.64x = 375,850.76 × 153,123.64
  4. Step 4: Simplify right side
    272,355.64x = 57,551,636,467.97
  5. Step 5: Solve for x
    x = 57,551,636,467.97/272,355.64
  6. Step 6: Final answer
    x = 211,310.61

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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.