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Finding the Fourth Proportional to 213,352.99, 320,047.81 and 55,581.19

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Solution

The fourth proportional to 213,352.99, 320,047.81 and 55,581.19 is: 83,376.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,352.99 : 320,047.81 = 55,581.19 : x
  2. Step 2: Convert to fraction form
    213,352.99/320,047.81 = 55,581.19/x
  3. Step 3: Cross multiply
    213,352.99x = 320,047.81 × 55,581.19
  4. Step 4: Simplify right side
    213,352.99x = 17,788,637,197.62
  5. Step 5: Solve for x
    x = 17,788,637,197.62/213,352.99
  6. Step 6: Final answer
    x = 83,376.56

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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.