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Finding the Fourth Proportional to 213,678.81, 320,675.69 and 101,359.35

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Solution

The fourth proportional to 213,678.81, 320,675.69 and 101,359.35 is: 152,113.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,678.81 : 320,675.69 = 101,359.35 : x
  2. Step 2: Convert to fraction form
    213,678.81/320,675.69 = 101,359.35/x
  3. Step 3: Cross multiply
    213,678.81x = 320,675.69 × 101,359.35
  4. Step 4: Simplify right side
    213,678.81x = 32,503,479,752.60
  5. Step 5: Solve for x
    x = 32,503,479,752.60/213,678.81
  6. Step 6: Final answer
    x = 152,113.73

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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.