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Finding the Fourth Proportional to 248,987.31, 343,504.58 and 153,327.93

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Solution

The fourth proportional to 248,987.31, 343,504.58 and 153,327.93 is: 211,532.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,987.31 : 343,504.58 = 153,327.93 : x
  2. Step 2: Convert to fraction form
    248,987.31/343,504.58 = 153,327.93/x
  3. Step 3: Cross multiply
    248,987.31x = 343,504.58 × 153,327.93
  4. Step 4: Simplify right side
    248,987.31x = 52,668,845,430.28
  5. Step 5: Solve for x
    x = 52,668,845,430.28/248,987.31
  6. Step 6: Final answer
    x = 211,532.25

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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.