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Finding the Fourth Proportional to 368,804.20, 508,678.26 and 254,121.16

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Solution

The fourth proportional to 368,804.20, 508,678.26 and 254,121.16 is: 350,500.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,804.20 : 508,678.26 = 254,121.16 : x
  2. Step 2: Convert to fraction form
    368,804.20/508,678.26 = 254,121.16/x
  3. Step 3: Cross multiply
    368,804.20x = 508,678.26 × 254,121.16
  4. Step 4: Simplify right side
    368,804.20x = 129,265,909,497.98
  5. Step 5: Solve for x
    x = 129,265,909,497.98/368,804.20
  6. Step 6: Final answer
    x = 350,500.10

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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.