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Finding the Fourth Proportional to 525,903.40, 788,336.70 and 259,445.80

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Solution

The fourth proportional to 525,903.40, 788,336.70 and 259,445.80 is: 388,912.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,903.40 : 788,336.70 = 259,445.80 : x
  2. Step 2: Convert to fraction form
    525,903.40/788,336.70 = 259,445.80/x
  3. Step 3: Cross multiply
    525,903.40x = 788,336.70 × 259,445.80
  4. Step 4: Simplify right side
    525,903.40x = 204,530,645,800.86
  5. Step 5: Solve for x
    x = 204,530,645,800.86/525,903.40
  6. Step 6: Final answer
    x = 388,912.96

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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.