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Finding the Fourth Proportional to 253,364.46, 379,289.01 and 153,221.58

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Solution

The fourth proportional to 253,364.46, 379,289.01 and 153,221.58 is: 229,374.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,364.46 : 379,289.01 = 153,221.58 : x
  2. Step 2: Convert to fraction form
    253,364.46/379,289.01 = 153,221.58/x
  3. Step 3: Cross multiply
    253,364.46x = 379,289.01 × 153,221.58
  4. Step 4: Simplify right side
    253,364.46x = 58,115,261,388.84
  5. Step 5: Solve for x
    x = 58,115,261,388.84/253,364.46
  6. Step 6: Final answer
    x = 229,374.16

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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.