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Finding the Fourth Proportional to 251,634.92, 347,256.14 and 138,457.68

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Solution

The fourth proportional to 251,634.92, 347,256.14 and 138,457.68 is: 191,071.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,634.92 : 347,256.14 = 138,457.68 : x
  2. Step 2: Convert to fraction form
    251,634.92/347,256.14 = 138,457.68/x
  3. Step 3: Cross multiply
    251,634.92x = 347,256.14 × 138,457.68
  4. Step 4: Simplify right side
    251,634.92x = 48,080,279,510.16
  5. Step 5: Solve for x
    x = 48,080,279,510.16/251,634.92
  6. Step 6: Final answer
    x = 191,071.57

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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.