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Finding the Fourth Proportional to 502,877.20, 755,190.60 and 266,681.20

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Solution

The fourth proportional to 502,877.20, 755,190.60 and 266,681.20 is: 400,485.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,877.20 : 755,190.60 = 266,681.20 : x
  2. Step 2: Convert to fraction form
    502,877.20/755,190.60 = 266,681.20/x
  3. Step 3: Cross multiply
    502,877.20x = 755,190.60 × 266,681.20
  4. Step 4: Simplify right side
    502,877.20x = 201,395,135,436.72
  5. Step 5: Solve for x
    x = 201,395,135,436.72/502,877.20
  6. Step 6: Final answer
    x = 400,485.72

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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.