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Finding the Fourth Proportional to 253,738.04, 380,459.45 and 95,978.79

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Solution

The fourth proportional to 253,738.04, 380,459.45 and 95,978.79 is: 143,912.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,738.04 : 380,459.45 = 95,978.79 : x
  2. Step 2: Convert to fraction form
    253,738.04/380,459.45 = 95,978.79/x
  3. Step 3: Cross multiply
    253,738.04x = 380,459.45 × 95,978.79
  4. Step 4: Simplify right side
    253,738.04x = 36,516,037,175.17
  5. Step 5: Solve for x
    x = 36,516,037,175.17/253,738.04
  6. Step 6: Final answer
    x = 143,912.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.