Home / 260,211.33-390,030.05-170,216.69

Finding the Fourth Proportional to 260,211.33, 390,030.05 and 170,216.69

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Solution

The fourth proportional to 260,211.33, 390,030.05 and 170,216.69 is: 255,137.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,211.33 : 390,030.05 = 170,216.69 : x
  2. Step 2: Convert to fraction form
    260,211.33/390,030.05 = 170,216.69/x
  3. Step 3: Cross multiply
    260,211.33x = 390,030.05 × 170,216.69
  4. Step 4: Simplify right side
    260,211.33x = 66,389,621,310.30
  5. Step 5: Solve for x
    x = 66,389,621,310.30/260,211.33
  6. Step 6: Final answer
    x = 255,137.32

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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.