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Finding the Fourth Proportional to 571,338.12, 856,998.64 and 139,057.07

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Solution

The fourth proportional to 571,338.12, 856,998.64 and 139,057.07 is: 208,583.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,338.12 : 856,998.64 = 139,057.07 : x
  2. Step 2: Convert to fraction form
    571,338.12/856,998.64 = 139,057.07/x
  3. Step 3: Cross multiply
    571,338.12x = 856,998.64 × 139,057.07
  4. Step 4: Simplify right side
    571,338.12x = 119,171,719,872.39
  5. Step 5: Solve for x
    x = 119,171,719,872.39/571,338.12
  6. Step 6: Final answer
    x = 208,583.53

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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.