Home / 385,292.12-531,759.54-221,917.22

Finding the Fourth Proportional to 385,292.12, 531,759.54 and 221,917.22

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Solution

The fourth proportional to 385,292.12, 531,759.54 and 221,917.22 is: 306,278.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,292.12 : 531,759.54 = 221,917.22 : x
  2. Step 2: Convert to fraction form
    385,292.12/531,759.54 = 221,917.22/x
  3. Step 3: Cross multiply
    385,292.12x = 531,759.54 × 221,917.22
  4. Step 4: Simplify right side
    385,292.12x = 118,006,598,825.28
  5. Step 5: Solve for x
    x = 118,006,598,825.28/385,292.12
  6. Step 6: Final answer
    x = 306,278.26

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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.