Home / 326,880.63-490,349.25-90,223.38

Finding the Fourth Proportional to 326,880.63, 490,349.25 and 90,223.38

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Solution

The fourth proportional to 326,880.63, 490,349.25 and 90,223.38 is: 135,342.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,880.63 : 490,349.25 = 90,223.38 : x
  2. Step 2: Convert to fraction form
    326,880.63/490,349.25 = 90,223.38/x
  3. Step 3: Cross multiply
    326,880.63x = 490,349.25 × 90,223.38
  4. Step 4: Simplify right side
    326,880.63x = 44,240,966,715.47
  5. Step 5: Solve for x
    x = 44,240,966,715.47/326,880.63
  6. Step 6: Final answer
    x = 135,342.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.