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Finding the Fourth Proportional to 525,957.90, 788,418.45 and 259,500.30

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Solution

The fourth proportional to 525,957.90, 788,418.45 and 259,500.30 is: 388,994.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,957.90 : 788,418.45 = 259,500.30 : x
  2. Step 2: Convert to fraction form
    525,957.90/788,418.45 = 259,500.30/x
  3. Step 3: Cross multiply
    525,957.90x = 788,418.45 × 259,500.30
  4. Step 4: Simplify right side
    525,957.90x = 204,594,824,300.54
  5. Step 5: Solve for x
    x = 204,594,824,300.54/525,957.90
  6. Step 6: Final answer
    x = 388,994.68

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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.