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Finding the Fourth Proportional to 208,774.14, 313,015.41 and 66,572.16

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Solution

The fourth proportional to 208,774.14, 313,015.41 and 66,572.16 is: 99,811.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,774.14 : 313,015.41 = 66,572.16 : x
  2. Step 2: Convert to fraction form
    208,774.14/313,015.41 = 66,572.16/x
  3. Step 3: Cross multiply
    208,774.14x = 313,015.41 × 66,572.16
  4. Step 4: Simplify right side
    208,774.14x = 20,838,111,956.99
  5. Step 5: Solve for x
    x = 20,838,111,956.99/208,774.14
  6. Step 6: Final answer
    x = 99,811.75

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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.