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Finding the Fourth Proportional to 213,630.05, 320,463.37 and 55,858.25

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Solution

The fourth proportional to 213,630.05, 320,463.37 and 55,858.25 is: 83,792.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,630.05 : 320,463.37 = 55,858.25 : x
  2. Step 2: Convert to fraction form
    213,630.05/320,463.37 = 55,858.25/x
  3. Step 3: Cross multiply
    213,630.05x = 320,463.37 × 55,858.25
  4. Step 4: Simplify right side
    213,630.05x = 17,900,523,037.30
  5. Step 5: Solve for x
    x = 17,900,523,037.30/213,630.05
  6. Step 6: Final answer
    x = 83,792.16

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1.5x scale

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.