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Finding the Fourth Proportional to 268,386.66, 402,570.78 and 68,708.82

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Solution

The fourth proportional to 268,386.66, 402,570.78 and 68,708.82 is: 103,060.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,386.66 : 402,570.78 = 68,708.82 : x
  2. Step 2: Convert to fraction form
    268,386.66/402,570.78 = 68,708.82/x
  3. Step 3: Cross multiply
    268,386.66x = 402,570.78 × 68,708.82
  4. Step 4: Simplify right side
    268,386.66x = 27,660,163,260.28
  5. Step 5: Solve for x
    x = 27,660,163,260.28/268,386.66
  6. Step 6: Final answer
    x = 103,060.87

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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.