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Finding the Fourth Proportional to 208,186.79, 312,280.99 and 50,415.39

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Solution

The fourth proportional to 208,186.79, 312,280.99 and 50,415.39 is: 75,623.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,186.79 : 312,280.99 = 50,415.39 : x
  2. Step 2: Convert to fraction form
    208,186.79/312,280.99 = 50,415.39/x
  3. Step 3: Cross multiply
    208,186.79x = 312,280.99 × 50,415.39
  4. Step 4: Simplify right side
    208,186.79x = 15,743,767,774.40
  5. Step 5: Solve for x
    x = 15,743,767,774.40/208,186.79
  6. Step 6: Final answer
    x = 75,623.28

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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.