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Finding the Fourth Proportional to 213,903.10, 320,927.55 and 64,147.06

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Solution

The fourth proportional to 213,903.10, 320,927.55 and 64,147.06 is: 96,242.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,903.10 : 320,927.55 = 64,147.06 : x
  2. Step 2: Convert to fraction form
    213,903.10/320,927.55 = 64,147.06/x
  3. Step 3: Cross multiply
    213,903.10x = 320,927.55 × 64,147.06
  4. Step 4: Simplify right side
    213,903.10x = 20,586,558,805.50
  5. Step 5: Solve for x
    x = 20,586,558,805.50/213,903.10
  6. Step 6: Final answer
    x = 96,242.45

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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.