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Finding the Fourth Proportional to 251,951.99, 347,693.72 and 138,774.74

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Solution

The fourth proportional to 251,951.99, 347,693.72 and 138,774.74 is: 191,509.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,951.99 : 347,693.72 = 138,774.74 : x
  2. Step 2: Convert to fraction form
    251,951.99/347,693.72 = 138,774.74/x
  3. Step 3: Cross multiply
    251,951.99x = 347,693.72 × 138,774.74
  4. Step 4: Simplify right side
    251,951.99x = 48,251,105,592.63
  5. Step 5: Solve for x
    x = 48,251,105,592.63/251,951.99
  6. Step 6: Final answer
    x = 191,509.13

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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.