Home / 307,977.09-425,003.86-172,012.92

Finding the Fourth Proportional to 307,977.09, 425,003.86 and 172,012.92

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Solution

The fourth proportional to 307,977.09, 425,003.86 and 172,012.92 is: 237,375.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,977.09 : 425,003.86 = 172,012.92 : x
  2. Step 2: Convert to fraction form
    307,977.09/425,003.86 = 172,012.92/x
  3. Step 3: Cross multiply
    307,977.09x = 425,003.86 × 172,012.92
  4. Step 4: Simplify right side
    307,977.09x = 73,106,155,981.77
  5. Step 5: Solve for x
    x = 73,106,155,981.77/307,977.09
  6. Step 6: Final answer
    x = 237,375.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.