Home / 251,820.17-347,511.21-138,642.92

Finding the Fourth Proportional to 251,820.17, 347,511.21 and 138,642.92

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Solution

The fourth proportional to 251,820.17, 347,511.21 and 138,642.92 is: 191,326.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,820.17 : 347,511.21 = 138,642.92 : x
  2. Step 2: Convert to fraction form
    251,820.17/347,511.21 = 138,642.92/x
  3. Step 3: Cross multiply
    251,820.17x = 347,511.21 × 138,642.92
  4. Step 4: Simplify right side
    251,820.17x = 48,179,968,887.13
  5. Step 5: Solve for x
    x = 48,179,968,887.13/251,820.17
  6. Step 6: Final answer
    x = 191,326.89

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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.