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Finding the Fourth Proportional to 431,309.54, 595,209.54 and 250,128.90

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Solution

The fourth proportional to 431,309.54, 595,209.54 and 250,128.90 is: 345,179.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,309.54 : 595,209.54 = 250,128.90 : x
  2. Step 2: Convert to fraction form
    431,309.54/595,209.54 = 250,128.90/x
  3. Step 3: Cross multiply
    431,309.54x = 595,209.54 × 250,128.90
  4. Step 4: Simplify right side
    431,309.54x = 148,879,107,509.71
  5. Step 5: Solve for x
    x = 148,879,107,509.71/431,309.54
  6. Step 6: Final answer
    x = 345,179.26

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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.