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Finding the Fourth Proportional to 253,969.36, 380,838.64 and 121,010.32

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Solution

The fourth proportional to 253,969.36, 380,838.64 and 121,010.32 is: 181,460.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,969.36 : 380,838.64 = 121,010.32 : x
  2. Step 2: Convert to fraction form
    253,969.36/380,838.64 = 121,010.32/x
  3. Step 3: Cross multiply
    253,969.36x = 380,838.64 × 121,010.32
  4. Step 4: Simplify right side
    253,969.36x = 46,085,405,694.76
  5. Step 5: Solve for x
    x = 46,085,405,694.76/253,969.36
  6. Step 6: Final answer
    x = 181,460.49

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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.