Home / 307,880.90-425,169.07-291,107.52

Finding the Fourth Proportional to 307,880.90, 425,169.07 and 291,107.52

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Solution

The fourth proportional to 307,880.90, 425,169.07 and 291,107.52 is: 402,005.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,880.90 : 425,169.07 = 291,107.52 : x
  2. Step 2: Convert to fraction form
    307,880.90/425,169.07 = 291,107.52/x
  3. Step 3: Cross multiply
    307,880.90x = 425,169.07 × 291,107.52
  4. Step 4: Simplify right side
    307,880.90x = 123,769,912,820.64
  5. Step 5: Solve for x
    x = 123,769,912,820.64/307,880.90
  6. Step 6: Final answer
    x = 402,005.82

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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.