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Finding the Fourth Proportional to 349,087.20, 523,630.80 and 171,940.20

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Solution

The fourth proportional to 349,087.20, 523,630.80 and 171,940.20 is: 257,910.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,087.20 : 523,630.80 = 171,940.20 : x
  2. Step 2: Convert to fraction form
    349,087.20/523,630.80 = 171,940.20/x
  3. Step 3: Cross multiply
    349,087.20x = 523,630.80 × 171,940.20
  4. Step 4: Simplify right side
    349,087.20x = 90,033,184,478.16
  5. Step 5: Solve for x
    x = 90,033,184,478.16/349,087.20
  6. Step 6: Final answer
    x = 257,910.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.