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Finding the Fourth Proportional to 251,557.56, 347,148.72 and 138,379.56

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Solution

The fourth proportional to 251,557.56, 347,148.72 and 138,379.56 is: 190,963.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,557.56 : 347,148.72 = 138,379.56 : x
  2. Step 2: Convert to fraction form
    251,557.56/347,148.72 = 138,379.56/x
  3. Step 3: Cross multiply
    251,557.56x = 347,148.72 × 138,379.56
  4. Step 4: Simplify right side
    251,557.56x = 48,038,287,128.16
  5. Step 5: Solve for x
    x = 48,038,287,128.16/251,557.56
  6. Step 6: Final answer
    x = 190,963.40

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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.