Home / 251,685.36-347,325.60-138,508.20

Finding the Fourth Proportional to 251,685.36, 347,325.60 and 138,508.20

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Solution

The fourth proportional to 251,685.36, 347,325.60 and 138,508.20 is: 191,141.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,685.36 : 347,325.60 = 138,508.20 : x
  2. Step 2: Convert to fraction form
    251,685.36/347,325.60 = 138,508.20/x
  3. Step 3: Cross multiply
    251,685.36x = 347,325.60 × 138,508.20
  4. Step 4: Simplify right side
    251,685.36x = 48,107,443,669.92
  5. Step 5: Solve for x
    x = 48,107,443,669.92/251,685.36
  6. Step 6: Final answer
    x = 191,141.21

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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.