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Finding the Fourth Proportional to 213,992.72, 320,988.28 and 64,232.36

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Solution

The fourth proportional to 213,992.72, 320,988.28 and 64,232.36 is: 96,348.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,992.72 : 320,988.28 = 64,232.36 : x
  2. Step 2: Convert to fraction form
    213,992.72/320,988.28 = 64,232.36/x
  3. Step 3: Cross multiply
    213,992.72x = 320,988.28 × 64,232.36
  4. Step 4: Simplify right side
    213,992.72x = 20,617,834,756.74
  5. Step 5: Solve for x
    x = 20,617,834,756.74/213,992.72
  6. Step 6: Final answer
    x = 96,348.30

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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.