Home / 421,268.45-581,015.84-318,246.17

Finding the Fourth Proportional to 421,268.45, 581,015.84 and 318,246.17

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Solution

The fourth proportional to 421,268.45, 581,015.84 and 318,246.17 is: 438,926.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,268.45 : 581,015.84 = 318,246.17 : x
  2. Step 2: Convert to fraction form
    421,268.45/581,015.84 = 318,246.17/x
  3. Step 3: Cross multiply
    421,268.45x = 581,015.84 × 318,246.17
  4. Step 4: Simplify right side
    421,268.45x = 184,906,061,293.02
  5. Step 5: Solve for x
    x = 184,906,061,293.02/421,268.45
  6. Step 6: Final answer
    x = 438,926.92

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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.