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Finding the Fourth Proportional to 525,828.80, 788,512.80 and 210,180.80

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Solution

The fourth proportional to 525,828.80, 788,512.80 and 210,180.80 is: 315,179.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,828.80 : 788,512.80 = 210,180.80 : x
  2. Step 2: Convert to fraction form
    525,828.80/788,512.80 = 210,180.80/x
  3. Step 3: Cross multiply
    525,828.80x = 788,512.80 × 210,180.80
  4. Step 4: Simplify right side
    525,828.80x = 165,730,251,114.24
  5. Step 5: Solve for x
    x = 165,730,251,114.24/525,828.80
  6. Step 6: Final answer
    x = 315,179.11

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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.