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Finding the Fourth Proportional to 525,523.97, 788,285.95 and 126,164.74

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Solution

The fourth proportional to 525,523.97, 788,285.95 and 126,164.74 is: 189,247.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,523.97 : 788,285.95 = 126,164.74 : x
  2. Step 2: Convert to fraction form
    525,523.97/788,285.95 = 126,164.74/x
  3. Step 3: Cross multiply
    525,523.97x = 788,285.95 × 126,164.74
  4. Step 4: Simplify right side
    525,523.97x = 99,453,891,927.40
  5. Step 5: Solve for x
    x = 99,453,891,927.40/525,523.97
  6. Step 6: Final answer
    x = 189,247.11

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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.