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Finding the Fourth Proportional to 253,812.79, 350,262.06 and 139,073.20

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Solution

The fourth proportional to 253,812.79, 350,262.06 and 139,073.20 is: 191,921.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,812.79 : 350,262.06 = 139,073.20 : x
  2. Step 2: Convert to fraction form
    253,812.79/350,262.06 = 139,073.20/x
  3. Step 3: Cross multiply
    253,812.79x = 350,262.06 × 139,073.20
  4. Step 4: Simplify right side
    253,812.79x = 48,712,063,076.12
  5. Step 5: Solve for x
    x = 48,712,063,076.12/253,812.79
  6. Step 6: Final answer
    x = 191,921.23

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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.