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Finding the Fourth Proportional to 355,967,998.80, 533,951,998.20 and 349,921,381.20

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Solution

The fourth proportional to 355,967,998.80, 533,951,998.20 and 349,921,381.20 is: 524,882,071.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,967,998.80 : 533,951,998.20 = 349,921,381.20 : x
  2. Step 2: Convert to fraction form
    355,967,998.80/533,951,998.20 = 349,921,381.20/x
  3. Step 3: Cross multiply
    355,967,998.80x = 533,951,998.20 × 349,921,381.20
  4. Step 4: Simplify right side
    355,967,998.80x = 186,841,220,704,643,904
  5. Step 5: Solve for x
    x = 186,841,220,704,643,904/355,967,998.80
  6. Step 6: Final answer
    x = 524,882,071.80

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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.