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Finding the Fourth Proportional to 253,712.76, 380,389 and 127,262.04

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Solution

The fourth proportional to 253,712.76, 380,389 and 127,262.04 is: 190,802.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,712.76 : 380,389 = 127,262.04 : x
  2. Step 2: Convert to fraction form
    253,712.76/380,389 = 127,262.04/x
  3. Step 3: Cross multiply
    253,712.76x = 380,389 × 127,262.04
  4. Step 4: Simplify right side
    253,712.76x = 48,409,080,133.56
  5. Step 5: Solve for x
    x = 48,409,080,133.56/253,712.76
  6. Step 6: Final answer
    x = 190,802.70

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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.