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Finding the Fourth Proportional to 253,108.80, 349,358.40 and 145,713.60

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Solution

The fourth proportional to 253,108.80, 349,358.40 and 145,713.60 is: 201,124.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,108.80 : 349,358.40 = 145,713.60 : x
  2. Step 2: Convert to fraction form
    253,108.80/349,358.40 = 145,713.60/x
  3. Step 3: Cross multiply
    253,108.80x = 349,358.40 × 145,713.60
  4. Step 4: Simplify right side
    253,108.80x = 50,906,270,154.24
  5. Step 5: Solve for x
    x = 50,906,270,154.24/253,108.80
  6. Step 6: Final answer
    x = 201,124.06

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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.