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Finding the Fourth Proportional to 453,245.90, 679,946.31 and 186,860.79

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Solution

The fourth proportional to 453,245.90, 679,946.31 and 186,860.79 is: 280,323.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,245.90 : 679,946.31 = 186,860.79 : x
  2. Step 2: Convert to fraction form
    453,245.90/679,946.31 = 186,860.79/x
  3. Step 3: Cross multiply
    453,245.90x = 679,946.31 × 186,860.79
  4. Step 4: Simplify right side
    453,245.90x = 127,055,304,644.19
  5. Step 5: Solve for x
    x = 127,055,304,644.19/453,245.90
  6. Step 6: Final answer
    x = 280,323.12

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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.