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Finding the Fourth Proportional to 349,215.60, 523,861.80 and 127,647.60

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Solution

The fourth proportional to 349,215.60, 523,861.80 and 127,647.60 is: 191,485.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,215.60 : 523,861.80 = 127,647.60 : x
  2. Step 2: Convert to fraction form
    349,215.60/523,861.80 = 127,647.60/x
  3. Step 3: Cross multiply
    349,215.60x = 523,861.80 × 127,647.60
  4. Step 4: Simplify right side
    349,215.60x = 66,869,701,501.68
  5. Step 5: Solve for x
    x = 66,869,701,501.68/349,215.60
  6. Step 6: Final answer
    x = 191,485.44

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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.