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Finding the Fourth Proportional to 208,004.52, 312,069.48 and 87,999.78

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Solution

The fourth proportional to 208,004.52, 312,069.48 and 87,999.78 is: 132,026.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,004.52 : 312,069.48 = 87,999.78 : x
  2. Step 2: Convert to fraction form
    208,004.52/312,069.48 = 87,999.78/x
  3. Step 3: Cross multiply
    208,004.52x = 312,069.48 × 87,999.78
  4. Step 4: Simplify right side
    208,004.52x = 27,462,045,584.71
  5. Step 5: Solve for x
    x = 27,462,045,584.71/208,004.52
  6. Step 6: Final answer
    x = 132,026.20

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1.5x scale

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.