Home / 215,513.49-297,387.31-120,029.07

Finding the Fourth Proportional to 215,513.49, 297,387.31 and 120,029.07

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Solution

The fourth proportional to 215,513.49, 297,387.31 and 120,029.07 is: 165,628.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,513.49 : 297,387.31 = 120,029.07 : x
  2. Step 2: Convert to fraction form
    215,513.49/297,387.31 = 120,029.07/x
  3. Step 3: Cross multiply
    215,513.49x = 297,387.31 × 120,029.07
  4. Step 4: Simplify right side
    215,513.49x = 35,695,122,249.10
  5. Step 5: Solve for x
    x = 35,695,122,249.10/215,513.49
  6. Step 6: Final answer
    x = 165,628.25

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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.