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Finding the Fourth Proportional to 202,386.72, 303,571.08 and 69,278.88

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Solution

The fourth proportional to 202,386.72, 303,571.08 and 69,278.88 is: 103,915.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,386.72 : 303,571.08 = 69,278.88 : x
  2. Step 2: Convert to fraction form
    202,386.72/303,571.08 = 69,278.88/x
  3. Step 3: Cross multiply
    202,386.72x = 303,571.08 × 69,278.88
  4. Step 4: Simplify right side
    202,386.72x = 21,031,064,422.79
  5. Step 5: Solve for x
    x = 21,031,064,422.79/202,386.72
  6. Step 6: Final answer
    x = 103,915.24

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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.