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Finding the Fourth Proportional to 213,069.69, 319,654.58 and 63,311.13

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Solution

The fourth proportional to 213,069.69, 319,654.58 and 63,311.13 is: 94,981.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,069.69 : 319,654.58 = 63,311.13 : x
  2. Step 2: Convert to fraction form
    213,069.69/319,654.58 = 63,311.13/x
  3. Step 3: Cross multiply
    213,069.69x = 319,654.58 × 63,311.13
  4. Step 4: Simplify right side
    213,069.69x = 20,237,692,352.92
  5. Step 5: Solve for x
    x = 20,237,692,352.92/213,069.69
  6. Step 6: Final answer
    x = 94,981.56

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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.