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Finding the Fourth Proportional to 356,808.58, 535,231.40 and 90,571.70

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Solution

The fourth proportional to 356,808.58, 535,231.40 and 90,571.70 is: 135,862.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,808.58 : 535,231.40 = 90,571.70 : x
  2. Step 2: Convert to fraction form
    356,808.58/535,231.40 = 90,571.70/x
  3. Step 3: Cross multiply
    356,808.58x = 535,231.40 × 90,571.70
  4. Step 4: Simplify right side
    356,808.58x = 48,476,818,676.60
  5. Step 5: Solve for x
    x = 48,476,818,676.60/356,808.58
  6. Step 6: Final answer
    x = 135,862.26

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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.