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Finding the Fourth Proportional to 492,076.84, 679,116.20 and 301,216.36

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Solution

The fourth proportional to 492,076.84, 679,116.20 and 301,216.36 is: 415,709.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,076.84 : 679,116.20 = 301,216.36 : x
  2. Step 2: Convert to fraction form
    492,076.84/679,116.20 = 301,216.36/x
  3. Step 3: Cross multiply
    492,076.84x = 679,116.20 × 301,216.36
  4. Step 4: Simplify right side
    492,076.84x = 204,560,909,781.03
  5. Step 5: Solve for x
    x = 204,560,909,781.03/492,076.84
  6. Step 6: Final answer
    x = 415,709.28

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1.5x scale

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.