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Finding the Fourth Proportional to 266,962.40, 399,860.40 and 207,330.20

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Solution

The fourth proportional to 266,962.40, 399,860.40 and 207,330.20 is: 310,542.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,962.40 : 399,860.40 = 207,330.20 : x
  2. Step 2: Convert to fraction form
    266,962.40/399,860.40 = 207,330.20/x
  3. Step 3: Cross multiply
    266,962.40x = 399,860.40 × 207,330.20
  4. Step 4: Simplify right side
    266,962.40x = 82,903,136,704.08
  5. Step 5: Solve for x
    x = 82,903,136,704.08/266,962.40
  6. Step 6: Final answer
    x = 310,542.37

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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.