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Finding the Fourth Proportional to 393,725.75, 543,341.55 and 214,877.75

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Solution

The fourth proportional to 393,725.75, 543,341.55 and 214,877.75 is: 296,531.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,725.75 : 543,341.55 = 214,877.75 : x
  2. Step 2: Convert to fraction form
    393,725.75/543,341.55 = 214,877.75/x
  3. Step 3: Cross multiply
    393,725.75x = 543,341.55 × 214,877.75
  4. Step 4: Simplify right side
    393,725.75x = 116,752,009,745.51
  5. Step 5: Solve for x
    x = 116,752,009,745.51/393,725.75
  6. Step 6: Final answer
    x = 296,531.30

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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.