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Finding the Fourth Proportional to 349,997.40, 525,384.90 and 217,027.80

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Solution

The fourth proportional to 349,997.40, 525,384.90 and 217,027.80 is: 325,782.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,997.40 : 525,384.90 = 217,027.80 : x
  2. Step 2: Convert to fraction form
    349,997.40/525,384.90 = 217,027.80/x
  3. Step 3: Cross multiply
    349,997.40x = 525,384.90 × 217,027.80
  4. Step 4: Simplify right side
    349,997.40x = 114,023,129,000.22
  5. Step 5: Solve for x
    x = 114,023,129,000.22/349,997.40
  6. Step 6: Final answer
    x = 325,782.79

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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.