Home / 378,331.23-522,004.28-249,255.39

Finding the Fourth Proportional to 378,331.23, 522,004.28 and 249,255.39

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Solution

The fourth proportional to 378,331.23, 522,004.28 and 249,255.39 is: 343,911.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,331.23 : 522,004.28 = 249,255.39 : x
  2. Step 2: Convert to fraction form
    378,331.23/522,004.28 = 249,255.39/x
  3. Step 3: Cross multiply
    378,331.23x = 522,004.28 × 249,255.39
  4. Step 4: Simplify right side
    378,331.23x = 130,112,379,146.79
  5. Step 5: Solve for x
    x = 130,112,379,146.79/378,331.23
  6. Step 6: Final answer
    x = 343,911.28

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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.