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Finding the Fourth Proportional to 393,073.92, 542,238.72 and 265,795.20

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Solution

The fourth proportional to 393,073.92, 542,238.72 and 265,795.20 is: 366,659.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,073.92 : 542,238.72 = 265,795.20 : x
  2. Step 2: Convert to fraction form
    393,073.92/542,238.72 = 265,795.20/x
  3. Step 3: Cross multiply
    393,073.92x = 542,238.72 × 265,795.20
  4. Step 4: Simplify right side
    393,073.92x = 144,124,449,030.14
  5. Step 5: Solve for x
    x = 144,124,449,030.14/393,073.92
  6. Step 6: Final answer
    x = 366,659.91

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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.