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Finding the Fourth Proportional to 170,216.40, 255,324.60 and 70,343.40

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Solution

The fourth proportional to 170,216.40, 255,324.60 and 70,343.40 is: 105,515.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,216.40 : 255,324.60 = 70,343.40 : x
  2. Step 2: Convert to fraction form
    170,216.40/255,324.60 = 70,343.40/x
  3. Step 3: Cross multiply
    170,216.40x = 255,324.60 × 70,343.40
  4. Step 4: Simplify right side
    170,216.40x = 17,960,400,467.64
  5. Step 5: Solve for x
    x = 17,960,400,467.64/170,216.40
  6. Step 6: Final answer
    x = 105,515.10

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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.