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Finding the Fourth Proportional to 251,852.72, 347,564.40 and 138,679.52

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Solution

The fourth proportional to 251,852.72, 347,564.40 and 138,679.52 is: 191,381.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,852.72 : 347,564.40 = 138,679.52 : x
  2. Step 2: Convert to fraction form
    251,852.72/347,564.40 = 138,679.52/x
  3. Step 3: Cross multiply
    251,852.72x = 347,564.40 × 138,679.52
  4. Step 4: Simplify right side
    251,852.72x = 48,200,064,161.09
  5. Step 5: Solve for x
    x = 48,200,064,161.09/251,852.72
  6. Step 6: Final answer
    x = 191,381.95

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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.