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Finding the Fourth Proportional to 605,358.40, 907,389.60 and 205,628.80

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Solution

The fourth proportional to 605,358.40, 907,389.60 and 205,628.80 is: 308,223.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,358.40 : 907,389.60 = 205,628.80 : x
  2. Step 2: Convert to fraction form
    605,358.40/907,389.60 = 205,628.80/x
  3. Step 3: Cross multiply
    605,358.40x = 907,389.60 × 205,628.80
  4. Step 4: Simplify right side
    605,358.40x = 186,585,434,580.48
  5. Step 5: Solve for x
    x = 186,585,434,580.48/605,358.40
  6. Step 6: Final answer
    x = 308,223.09

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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.