Home / 355,578.18-490,693.32-212,528.94

Finding the Fourth Proportional to 355,578.18, 490,693.32 and 212,528.94

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Solution

The fourth proportional to 355,578.18, 490,693.32 and 212,528.94 is: 293,287.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,578.18 : 490,693.32 = 212,528.94 : x
  2. Step 2: Convert to fraction form
    355,578.18/490,693.32 = 212,528.94/x
  3. Step 3: Cross multiply
    355,578.18x = 490,693.32 × 212,528.94
  4. Step 4: Simplify right side
    355,578.18x = 104,286,531,164.68
  5. Step 5: Solve for x
    x = 104,286,531,164.68/355,578.18
  6. Step 6: Final answer
    x = 293,287.21

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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.