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Finding the Fourth Proportional to 652,090.80, 978,136.20 and 202,840.06

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Solution

The fourth proportional to 652,090.80, 978,136.20 and 202,840.06 is: 304,260.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,090.80 : 978,136.20 = 202,840.06 : x
  2. Step 2: Convert to fraction form
    652,090.80/978,136.20 = 202,840.06/x
  3. Step 3: Cross multiply
    652,090.80x = 978,136.20 × 202,840.06
  4. Step 4: Simplify right side
    652,090.80x = 198,405,205,496.17
  5. Step 5: Solve for x
    x = 198,405,205,496.17/652,090.80
  6. Step 6: Final answer
    x = 304,260.09

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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.