Home / 385,281.12-531,744.35-221,906.23

Finding the Fourth Proportional to 385,281.12, 531,744.35 and 221,906.23

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Solution

The fourth proportional to 385,281.12, 531,744.35 and 221,906.23 is: 306,263.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,281.12 : 531,744.35 = 221,906.23 : x
  2. Step 2: Convert to fraction form
    385,281.12/531,744.35 = 221,906.23/x
  3. Step 3: Cross multiply
    385,281.12x = 531,744.35 × 221,906.23
  4. Step 4: Simplify right side
    385,281.12x = 117,997,383,257.71
  5. Step 5: Solve for x
    x = 117,997,383,257.71/385,281.12
  6. Step 6: Final answer
    x = 306,263.08

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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.