Home / 385,272.96-531,716.40-221,934.96

Finding the Fourth Proportional to 385,272.96, 531,716.40 and 221,934.96

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Solution

The fourth proportional to 385,272.96, 531,716.40 and 221,934.96 is: 306,293.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,272.96 : 531,716.40 = 221,934.96 : x
  2. Step 2: Convert to fraction form
    385,272.96/531,716.40 = 221,934.96/x
  3. Step 3: Cross multiply
    385,272.96x = 531,716.40 × 221,934.96
  4. Step 4: Simplify right side
    385,272.96x = 118,006,457,965.34
  5. Step 5: Solve for x
    x = 118,006,457,965.34/385,272.96
  6. Step 6: Final answer
    x = 306,293.12

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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.