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Finding the Fourth Proportional to 525,859.60, 788,983.80 and 210,542.80

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Solution

The fourth proportional to 525,859.60, 788,983.80 and 210,542.80 is: 315,892.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,859.60 : 788,983.80 = 210,542.80 : x
  2. Step 2: Convert to fraction form
    525,859.60/788,983.80 = 210,542.80/x
  3. Step 3: Cross multiply
    525,859.60x = 788,983.80 × 210,542.80
  4. Step 4: Simplify right side
    525,859.60x = 166,114,858,406.64
  5. Step 5: Solve for x
    x = 166,114,858,406.64/525,859.60
  6. Step 6: Final answer
    x = 315,892.03

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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.