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Finding the Fourth Proportional to 213,967.28, 320,950.61 and 64,207.32

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Solution

The fourth proportional to 213,967.28, 320,950.61 and 64,207.32 is: 96,310.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,967.28 : 320,950.61 = 64,207.32 : x
  2. Step 2: Convert to fraction form
    213,967.28/320,950.61 = 64,207.32/x
  3. Step 3: Cross multiply
    213,967.28x = 320,950.61 × 64,207.32
  4. Step 4: Simplify right side
    213,967.28x = 20,607,378,199.43
  5. Step 5: Solve for x
    x = 20,607,378,199.43/213,967.28
  6. Step 6: Final answer
    x = 96,310.89

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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.