Home / 260,210.96-390,029.48-170,216.31

Finding the Fourth Proportional to 260,210.96, 390,029.48 and 170,216.31

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Solution

The fourth proportional to 260,210.96, 390,029.48 and 170,216.31 is: 255,136.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,210.96 : 390,029.48 = 170,216.31 : x
  2. Step 2: Convert to fraction form
    260,210.96/390,029.48 = 170,216.31/x
  3. Step 3: Cross multiply
    260,210.96x = 390,029.48 × 170,216.31
  4. Step 4: Simplify right side
    260,210.96x = 66,389,378,025.74
  5. Step 5: Solve for x
    x = 66,389,378,025.74/260,210.96
  6. Step 6: Final answer
    x = 255,136.75

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1.5x scale

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.