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Finding the Fourth Proportional to 355,978,549.40, 533,967,824.10 and 331,036,251.80

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Solution

The fourth proportional to 355,978,549.40, 533,967,824.10 and 331,036,251.80 is: 496,554,377.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,978,549.40 : 533,967,824.10 = 331,036,251.80 : x
  2. Step 2: Convert to fraction form
    355,978,549.40/533,967,824.10 = 331,036,251.80/x
  3. Step 3: Cross multiply
    355,978,549.40x = 533,967,824.10 × 331,036,251.80
  4. Step 4: Simplify right side
    355,978,549.40x = 176,762,707,071,865,728
  5. Step 5: Solve for x
    x = 176,762,707,071,865,728/355,978,549.40
  6. Step 6: Final answer
    x = 496,554,377.70

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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.