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Finding the Fourth Proportional to 248,809, 343,479 and 172,386.04

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Solution

The fourth proportional to 248,809, 343,479 and 172,386.04 is: 237,977.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,809 : 343,479 = 172,386.04 : x
  2. Step 2: Convert to fraction form
    248,809/343,479 = 172,386.04/x
  3. Step 3: Cross multiply
    248,809x = 343,479 × 172,386.04
  4. Step 4: Simplify right side
    248,809x = 59,210,984,633.16
  5. Step 5: Solve for x
    x = 59,210,984,633.16/248,809
  6. Step 6: Final answer
    x = 237,977.66

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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.