Home / 253,437.96-380,241.36-84,975

Finding the Fourth Proportional to 253,437.96, 380,241.36 and 84,975

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Solution

The fourth proportional to 253,437.96, 380,241.36 and 84,975 is: 127,490.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,437.96 : 380,241.36 = 84,975 : x
  2. Step 2: Convert to fraction form
    253,437.96/380,241.36 = 84,975/x
  3. Step 3: Cross multiply
    253,437.96x = 380,241.36 × 84,975
  4. Step 4: Simplify right side
    253,437.96x = 32,311,009,566
  5. Step 5: Solve for x
    x = 32,311,009,566/253,437.96
  6. Step 6: Final answer
    x = 127,490.81

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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.