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Finding the Fourth Proportional to 251,655.26, 347,284.13 and 138,478.01

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Solution

The fourth proportional to 251,655.26, 347,284.13 and 138,478.01 is: 191,099.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,655.26 : 347,284.13 = 138,478.01 : x
  2. Step 2: Convert to fraction form
    251,655.26/347,284.13 = 138,478.01/x
  3. Step 3: Cross multiply
    251,655.26x = 347,284.13 × 138,478.01
  4. Step 4: Simplify right side
    251,655.26x = 48,091,212,798.17
  5. Step 5: Solve for x
    x = 48,091,212,798.17/251,655.26
  6. Step 6: Final answer
    x = 191,099.58

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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.