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Finding the Fourth Proportional to 248,406.75, 342,802.13 and 135,230.31

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Solution

The fourth proportional to 248,406.75, 342,802.13 and 135,230.31 is: 186,618.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,406.75 : 342,802.13 = 135,230.31 : x
  2. Step 2: Convert to fraction form
    248,406.75/342,802.13 = 135,230.31/x
  3. Step 3: Cross multiply
    248,406.75x = 342,802.13 × 135,230.31
  4. Step 4: Simplify right side
    248,406.75x = 46,357,237,632.41
  5. Step 5: Solve for x
    x = 46,357,237,632.41/248,406.75
  6. Step 6: Final answer
    x = 186,618.27

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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.