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Finding the Fourth Proportional to 200,490.76, 300,803.28 and 65,561.06

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Solution

The fourth proportional to 200,490.76, 300,803.28 and 65,561.06 is: 98,363.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,490.76 : 300,803.28 = 65,561.06 : x
  2. Step 2: Convert to fraction form
    200,490.76/300,803.28 = 65,561.06/x
  3. Step 3: Cross multiply
    200,490.76x = 300,803.28 × 65,561.06
  4. Step 4: Simplify right side
    200,490.76x = 19,720,980,384.26
  5. Step 5: Solve for x
    x = 19,720,980,384.26/200,490.76
  6. Step 6: Final answer
    x = 98,363.54

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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.