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Finding the Fourth Proportional to 476,659.78, 714,985.15 and 121,668.90

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Solution

The fourth proportional to 476,659.78, 714,985.15 and 121,668.90 is: 182,502.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,659.78 : 714,985.15 = 121,668.90 : x
  2. Step 2: Convert to fraction form
    476,659.78/714,985.15 = 121,668.90/x
  3. Step 3: Cross multiply
    476,659.78x = 714,985.15 × 121,668.90
  4. Step 4: Simplify right side
    476,659.78x = 86,991,456,716.84
  5. Step 5: Solve for x
    x = 86,991,456,716.84/476,659.78
  6. Step 6: Final answer
    x = 182,502.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.