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Finding the Fourth Proportional to 253,523.74, 349,866.90 and 138,800.47

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Solution

The fourth proportional to 253,523.74, 349,866.90 and 138,800.47 is: 191,546.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,523.74 : 349,866.90 = 138,800.47 : x
  2. Step 2: Convert to fraction form
    253,523.74/349,866.90 = 138,800.47/x
  3. Step 3: Cross multiply
    253,523.74x = 349,866.90 × 138,800.47
  4. Step 4: Simplify right side
    253,523.74x = 48,561,688,408.11
  5. Step 5: Solve for x
    x = 48,561,688,408.11/253,523.74
  6. Step 6: Final answer
    x = 191,546.91

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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.