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Finding the Fourth Proportional to 210,317.63, 315,214.01 and 105,166.67

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Solution

The fourth proportional to 210,317.63, 315,214.01 and 105,166.67 is: 157,618.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,317.63 : 315,214.01 = 105,166.67 : x
  2. Step 2: Convert to fraction form
    210,317.63/315,214.01 = 105,166.67/x
  3. Step 3: Cross multiply
    210,317.63x = 315,214.01 × 105,166.67
  4. Step 4: Simplify right side
    210,317.63x = 33,150,007,243.21
  5. Step 5: Solve for x
    x = 33,150,007,243.21/210,317.63
  6. Step 6: Final answer
    x = 157,618.78

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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.