Home / 347,140.82-479,090.38-199,970.78

Finding the Fourth Proportional to 347,140.82, 479,090.38 and 199,970.78

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Solution

The fourth proportional to 347,140.82, 479,090.38 and 199,970.78 is: 275,980.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,140.82 : 479,090.38 = 199,970.78 : x
  2. Step 2: Convert to fraction form
    347,140.82/479,090.38 = 199,970.78/x
  3. Step 3: Cross multiply
    347,140.82x = 479,090.38 × 199,970.78
  4. Step 4: Simplify right side
    347,140.82x = 95,804,076,979.10
  5. Step 5: Solve for x
    x = 95,804,076,979.10/347,140.82
  6. Step 6: Final answer
    x = 275,980.44

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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.