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Finding the Fourth Proportional to 378,443.78, 522,225.72 and 208,674.26

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Solution

The fourth proportional to 378,443.78, 522,225.72 and 208,674.26 is: 287,955.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,443.78 : 522,225.72 = 208,674.26 : x
  2. Step 2: Convert to fraction form
    378,443.78/522,225.72 = 208,674.26/x
  3. Step 3: Cross multiply
    378,443.78x = 522,225.72 × 208,674.26
  4. Step 4: Simplify right side
    378,443.78x = 108,975,065,673.97
  5. Step 5: Solve for x
    x = 108,975,065,673.97/378,443.78
  6. Step 6: Final answer
    x = 287,955.76

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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.