Home / 279,909,919.04-419,863,383.81-72,648,178.11

Finding the Fourth Proportional to 279,909,919.04, 419,863,383.81 and 72,648,178.11

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Solution

The fourth proportional to 279,909,919.04, 419,863,383.81 and 72,648,178.11 is: 108,971,879.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,909,919.04 : 419,863,383.81 = 72,648,178.11 : x
  2. Step 2: Convert to fraction form
    279,909,919.04/419,863,383.81 = 72,648,178.11/x
  3. Step 3: Cross multiply
    279,909,919.04x = 419,863,383.81 × 72,648,178.11
  4. Step 4: Simplify right side
    279,909,919.04x = 30,502,309,888,896,172
  5. Step 5: Solve for x
    x = 30,502,309,888,896,172/279,909,919.04
  6. Step 6: Final answer
    x = 108,971,879.22

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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.