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Finding the Fourth Proportional to 356,799.80, 535,199.70 and 351,270.20

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Solution

The fourth proportional to 356,799.80, 535,199.70 and 351,270.20 is: 526,905.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,799.80 : 535,199.70 = 351,270.20 : x
  2. Step 2: Convert to fraction form
    356,799.80/535,199.70 = 351,270.20/x
  3. Step 3: Cross multiply
    356,799.80x = 535,199.70 × 351,270.20
  4. Step 4: Simplify right side
    356,799.80x = 187,999,705,658.94
  5. Step 5: Solve for x
    x = 187,999,705,658.94/356,799.80
  6. Step 6: Final answer
    x = 526,905.30

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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.