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Finding the Fourth Proportional to 313,707.36, 432,920.16 and 170,469.60

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Solution

The fourth proportional to 313,707.36, 432,920.16 and 170,469.60 is: 235,250.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,707.36 : 432,920.16 = 170,469.60 : x
  2. Step 2: Convert to fraction form
    313,707.36/432,920.16 = 170,469.60/x
  3. Step 3: Cross multiply
    313,707.36x = 432,920.16 × 170,469.60
  4. Step 4: Simplify right side
    313,707.36x = 73,799,726,507.14
  5. Step 5: Solve for x
    x = 73,799,726,507.14/313,707.36
  6. Step 6: Final answer
    x = 235,250.22

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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.