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Finding the Fourth Proportional to 262,366.40, 393,507.36 and 75,335.36

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Solution

The fourth proportional to 262,366.40, 393,507.36 and 75,335.36 is: 112,990.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,366.40 : 393,507.36 = 75,335.36 : x
  2. Step 2: Convert to fraction form
    262,366.40/393,507.36 = 75,335.36/x
  3. Step 3: Cross multiply
    262,366.40x = 393,507.36 × 75,335.36
  4. Step 4: Simplify right side
    262,366.40x = 29,645,018,628.25
  5. Step 5: Solve for x
    x = 29,645,018,628.25/262,366.40
  6. Step 6: Final answer
    x = 112,990.91

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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.