Home / 313,629.50-432,809.16-170,389.64

Finding the Fourth Proportional to 313,629.50, 432,809.16 and 170,389.64

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Solution

The fourth proportional to 313,629.50, 432,809.16 and 170,389.64 is: 235,137.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,629.50 : 432,809.16 = 170,389.64 : x
  2. Step 2: Convert to fraction form
    313,629.50/432,809.16 = 170,389.64/x
  3. Step 3: Cross multiply
    313,629.50x = 432,809.16 × 170,389.64
  4. Step 4: Simplify right side
    313,629.50x = 73,746,196,961.10
  5. Step 5: Solve for x
    x = 73,746,196,961.10/313,629.50
  6. Step 6: Final answer
    x = 235,137.95

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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.