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Finding the Fourth Proportional to 200,490.51, 300,802.91 and 65,560.80

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Solution

The fourth proportional to 200,490.51, 300,802.91 and 65,560.80 is: 98,363.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,490.51 : 300,802.91 = 65,560.80 : x
  2. Step 2: Convert to fraction form
    200,490.51/300,802.91 = 65,560.80/x
  3. Step 3: Cross multiply
    200,490.51x = 300,802.91 × 65,560.80
  4. Step 4: Simplify right side
    200,490.51x = 19,720,879,094.12
  5. Step 5: Solve for x
    x = 19,720,879,094.12/200,490.51
  6. Step 6: Final answer
    x = 98,363.15

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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.