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Finding the Fourth Proportional to 391,703.87, 540,716.69 and 264,551.69

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Solution

The fourth proportional to 391,703.87, 540,716.69 and 264,551.69 is: 365,193.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,703.87 : 540,716.69 = 264,551.69 : x
  2. Step 2: Convert to fraction form
    391,703.87/540,716.69 = 264,551.69/x
  3. Step 3: Cross multiply
    391,703.87x = 540,716.69 × 264,551.69
  4. Step 4: Simplify right side
    391,703.87x = 143,047,516,163.88
  5. Step 5: Solve for x
    x = 143,047,516,163.88/391,703.87
  6. Step 6: Final answer
    x = 365,193.01

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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.