Home / 427,139.47-641,024.62-202,500.69

Finding the Fourth Proportional to 427,139.47, 641,024.62 and 202,500.69

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Solution

The fourth proportional to 427,139.47, 641,024.62 and 202,500.69 is: 303,900.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,139.47 : 641,024.62 = 202,500.69 : x
  2. Step 2: Convert to fraction form
    427,139.47/641,024.62 = 202,500.69/x
  3. Step 3: Cross multiply
    427,139.47x = 641,024.62 × 202,500.69
  4. Step 4: Simplify right side
    427,139.47x = 129,807,927,856.99
  5. Step 5: Solve for x
    x = 129,807,927,856.99/427,139.47
  6. Step 6: Final answer
    x = 303,900.57

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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.