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Finding the Fourth Proportional to 293,452,903.80, 440,179,355.70 and 279,103,996.80

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Solution

The fourth proportional to 293,452,903.80, 440,179,355.70 and 279,103,996.80 is: 418,655,995.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,452,903.80 : 440,179,355.70 = 279,103,996.80 : x
  2. Step 2: Convert to fraction form
    293,452,903.80/440,179,355.70 = 279,103,996.80/x
  3. Step 3: Cross multiply
    293,452,903.80x = 440,179,355.70 × 279,103,996.80
  4. Step 4: Simplify right side
    293,452,903.80x = 122,855,817,484,718,864
  5. Step 5: Solve for x
    x = 122,855,817,484,718,864/293,452,903.80
  6. Step 6: Final answer
    x = 418,655,995.20

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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.