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Finding the Fourth Proportional to 251,526.78, 347,099.72 and 138,349.53

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Solution

The fourth proportional to 251,526.78, 347,099.72 and 138,349.53 is: 190,918.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,526.78 : 347,099.72 = 138,349.53 : x
  2. Step 2: Convert to fraction form
    251,526.78/347,099.72 = 138,349.53/x
  3. Step 3: Cross multiply
    251,526.78x = 347,099.72 × 138,349.53
  4. Step 4: Simplify right side
    251,526.78x = 48,021,082,433.38
  5. Step 5: Solve for x
    x = 48,021,082,433.38/251,526.78
  6. Step 6: Final answer
    x = 190,918.37

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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.