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Finding the Fourth Proportional to 451,001.79, 676,724.99 and 211,131.96

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Solution

The fourth proportional to 451,001.79, 676,724.99 and 211,131.96 is: 316,802.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,001.79 : 676,724.99 = 211,131.96 : x
  2. Step 2: Convert to fraction form
    451,001.79/676,724.99 = 211,131.96/x
  3. Step 3: Cross multiply
    451,001.79x = 676,724.99 × 211,131.96
  4. Step 4: Simplify right side
    451,001.79x = 142,878,272,464.02
  5. Step 5: Solve for x
    x = 142,878,272,464.02/451,001.79
  6. Step 6: Final answer
    x = 316,802.01

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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.