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Finding the Fourth Proportional to 260,827.65, 391,259.70 and 103,035.60

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Solution

The fourth proportional to 260,827.65, 391,259.70 and 103,035.60 is: 154,560.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,827.65 : 391,259.70 = 103,035.60 : x
  2. Step 2: Convert to fraction form
    260,827.65/391,259.70 = 103,035.60/x
  3. Step 3: Cross multiply
    260,827.65x = 391,259.70 × 103,035.60
  4. Step 4: Simplify right side
    260,827.65x = 40,313,677,945.32
  5. Step 5: Solve for x
    x = 40,313,677,945.32/260,827.65
  6. Step 6: Final answer
    x = 154,560.60

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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.