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Finding the Fourth Proportional to 212,973.53, 319,366.66 and 79,760.32

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Solution

The fourth proportional to 212,973.53, 319,366.66 and 79,760.32 is: 119,605.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,973.53 : 319,366.66 = 79,760.32 : x
  2. Step 2: Convert to fraction form
    212,973.53/319,366.66 = 79,760.32/x
  3. Step 3: Cross multiply
    212,973.53x = 319,366.66 × 79,760.32
  4. Step 4: Simplify right side
    212,973.53x = 25,472,786,998.93
  5. Step 5: Solve for x
    x = 25,472,786,998.93/212,973.53
  6. Step 6: Final answer
    x = 119,605.41

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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.