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Finding the Fourth Proportional to 257,793.12, 355,674.78 and 150,287.06

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Solution

The fourth proportional to 257,793.12, 355,674.78 and 150,287.06 is: 207,349.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,793.12 : 355,674.78 = 150,287.06 : x
  2. Step 2: Convert to fraction form
    257,793.12/355,674.78 = 150,287.06/x
  3. Step 3: Cross multiply
    257,793.12x = 355,674.78 × 150,287.06
  4. Step 4: Simplify right side
    257,793.12x = 53,453,315,223.97
  5. Step 5: Solve for x
    x = 53,453,315,223.97/257,793.12
  6. Step 6: Final answer
    x = 207,349.66

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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.