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Finding the Fourth Proportional to 605,441.40, 907,514.10 and 205,711.80

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Solution

The fourth proportional to 605,441.40, 907,514.10 and 205,711.80 is: 308,347.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,441.40 : 907,514.10 = 205,711.80 : x
  2. Step 2: Convert to fraction form
    605,441.40/907,514.10 = 205,711.80/x
  3. Step 3: Cross multiply
    605,441.40x = 907,514.10 × 205,711.80
  4. Step 4: Simplify right side
    605,441.40x = 186,686,359,036.38
  5. Step 5: Solve for x
    x = 186,686,359,036.38/605,441.40
  6. Step 6: Final answer
    x = 308,347.53

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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.