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Finding the Fourth Proportional to 605,059.60, 907,675.80 and 205,718.80

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Solution

The fourth proportional to 605,059.60, 907,675.80 and 205,718.80 is: 308,607.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,059.60 : 907,675.80 = 205,718.80 : x
  2. Step 2: Convert to fraction form
    605,059.60/907,675.80 = 205,718.80/x
  3. Step 3: Cross multiply
    605,059.60x = 907,675.80 × 205,718.80
  4. Step 4: Simplify right side
    605,059.60x = 186,725,976,365.04
  5. Step 5: Solve for x
    x = 186,725,976,365.04/605,059.60
  6. Step 6: Final answer
    x = 308,607.58

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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.