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Finding the Fourth Proportional to 250,279.95, 345,394.95 and 137,102.70

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Solution

The fourth proportional to 250,279.95, 345,394.95 and 137,102.70 is: 189,206.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,279.95 : 345,394.95 = 137,102.70 : x
  2. Step 2: Convert to fraction form
    250,279.95/345,394.95 = 137,102.70/x
  3. Step 3: Cross multiply
    250,279.95x = 345,394.95 × 137,102.70
  4. Step 4: Simplify right side
    250,279.95x = 47,354,580,211.37
  5. Step 5: Solve for x
    x = 47,354,580,211.37/250,279.95
  6. Step 6: Final answer
    x = 189,206.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.