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Finding the Fourth Proportional to 403,397.40, 605,096.10 and 359,851.80

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Solution

The fourth proportional to 403,397.40, 605,096.10 and 359,851.80 is: 539,777.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,397.40 : 605,096.10 = 359,851.80 : x
  2. Step 2: Convert to fraction form
    403,397.40/605,096.10 = 359,851.80/x
  3. Step 3: Cross multiply
    403,397.40x = 605,096.10 × 359,851.80
  4. Step 4: Simplify right side
    403,397.40x = 217,744,920,757.98
  5. Step 5: Solve for x
    x = 217,744,920,757.98/403,397.40
  6. Step 6: Final answer
    x = 539,777.70

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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.