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Finding the Fourth Proportional to 313,396.56, 432,489.51 and 170,156.70

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Solution

The fourth proportional to 313,396.56, 432,489.51 and 170,156.70 is: 234,817.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,396.56 : 432,489.51 = 170,156.70 : x
  2. Step 2: Convert to fraction form
    313,396.56/432,489.51 = 170,156.70/x
  3. Step 3: Cross multiply
    313,396.56x = 432,489.51 × 170,156.70
  4. Step 4: Simplify right side
    313,396.56x = 73,590,987,806.22
  5. Step 5: Solve for x
    x = 73,590,987,806.22/313,396.56
  6. Step 6: Final answer
    x = 234,817.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.