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Finding the Fourth Proportional to 605,440.90, 907,513.35 and 205,711.30

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Solution

The fourth proportional to 605,440.90, 907,513.35 and 205,711.30 is: 308,346.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,440.90 : 907,513.35 = 205,711.30 : x
  2. Step 2: Convert to fraction form
    605,440.90/907,513.35 = 205,711.30/x
  3. Step 3: Cross multiply
    605,440.90x = 907,513.35 × 205,711.30
  4. Step 4: Simplify right side
    605,440.90x = 186,685,750,995.86
  5. Step 5: Solve for x
    x = 186,685,750,995.86/605,440.90
  6. Step 6: Final answer
    x = 308,346.78

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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.