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Finding the Fourth Proportional to 291,519.76, 401,450.22 and 253,261.84

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Solution

The fourth proportional to 291,519.76, 401,450.22 and 253,261.84 is: 348,765.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,519.76 : 401,450.22 = 253,261.84 : x
  2. Step 2: Convert to fraction form
    291,519.76/401,450.22 = 253,261.84/x
  3. Step 3: Cross multiply
    291,519.76x = 401,450.22 × 253,261.84
  4. Step 4: Simplify right side
    291,519.76x = 101,672,021,385.61
  5. Step 5: Solve for x
    x = 101,672,021,385.61/291,519.76
  6. Step 6: Final answer
    x = 348,765.45

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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.