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Finding the Fourth Proportional to 257,270.80, 354,838.48 and 225,384.32

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Solution

The fourth proportional to 257,270.80, 354,838.48 and 225,384.32 is: 310,859.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,270.80 : 354,838.48 = 225,384.32 : x
  2. Step 2: Convert to fraction form
    257,270.80/354,838.48 = 225,384.32/x
  3. Step 3: Cross multiply
    257,270.80x = 354,838.48 × 225,384.32
  4. Step 4: Simplify right side
    257,270.80x = 79,975,029,524.63
  5. Step 5: Solve for x
    x = 79,975,029,524.63/257,270.80
  6. Step 6: Final answer
    x = 310,859.33

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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.