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Finding the Fourth Proportional to 208,279.70, 312,237.30 and 141,503.30

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Solution

The fourth proportional to 208,279.70, 312,237.30 and 141,503.30 is: 212,131.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,279.70 : 312,237.30 = 141,503.30 : x
  2. Step 2: Convert to fraction form
    208,279.70/312,237.30 = 141,503.30/x
  3. Step 3: Cross multiply
    208,279.70x = 312,237.30 × 141,503.30
  4. Step 4: Simplify right side
    208,279.70x = 44,182,608,333.09
  5. Step 5: Solve for x
    x = 44,182,608,333.09/208,279.70
  6. Step 6: Final answer
    x = 212,131.13

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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.