Home / 313,625.20-432,800.40-170,386.28

Finding the Fourth Proportional to 313,625.20, 432,800.40 and 170,386.28

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Solution

The fourth proportional to 313,625.20, 432,800.40 and 170,386.28 is: 235,131.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,625.20 : 432,800.40 = 170,386.28 : x
  2. Step 2: Convert to fraction form
    313,625.20/432,800.40 = 170,386.28/x
  3. Step 3: Cross multiply
    313,625.20x = 432,800.40 × 170,386.28
  4. Step 4: Simplify right side
    313,625.20x = 73,743,250,138.51
  5. Step 5: Solve for x
    x = 73,743,250,138.51/313,625.20
  6. Step 6: Final answer
    x = 235,131.78

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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.