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Finding the Fourth Proportional to 368,804.80, 508,918.32 and 205,449.28

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Solution

The fourth proportional to 368,804.80, 508,918.32 and 205,449.28 is: 283,502.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,804.80 : 508,918.32 = 205,449.28 : x
  2. Step 2: Convert to fraction form
    368,804.80/508,918.32 = 205,449.28/x
  3. Step 3: Cross multiply
    368,804.80x = 508,918.32 × 205,449.28
  4. Step 4: Simplify right side
    368,804.80x = 104,556,902,422.81
  5. Step 5: Solve for x
    x = 104,556,902,422.81/368,804.80
  6. Step 6: Final answer
    x = 283,502.01

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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.