Home / 385,387.81-531,790.78-222,068.13

Finding the Fourth Proportional to 385,387.81, 531,790.78 and 222,068.13

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Solution

The fourth proportional to 385,387.81, 531,790.78 and 222,068.13 is: 306,428.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,387.81 : 531,790.78 = 222,068.13 : x
  2. Step 2: Convert to fraction form
    385,387.81/531,790.78 = 222,068.13/x
  3. Step 3: Cross multiply
    385,387.81x = 531,790.78 × 222,068.13
  4. Step 4: Simplify right side
    385,387.81x = 118,093,784,065.84
  5. Step 5: Solve for x
    x = 118,093,784,065.84/385,387.81
  6. Step 6: Final answer
    x = 306,428.44

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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.