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Finding the Fourth Proportional to 260,015.30, 390,022.95 and 169,813.70

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Solution

The fourth proportional to 260,015.30, 390,022.95 and 169,813.70 is: 254,720.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,015.30 : 390,022.95 = 169,813.70 : x
  2. Step 2: Convert to fraction form
    260,015.30/390,022.95 = 169,813.70/x
  3. Step 3: Cross multiply
    260,015.30x = 390,022.95 × 169,813.70
  4. Step 4: Simplify right side
    260,015.30x = 66,231,240,224.42
  5. Step 5: Solve for x
    x = 66,231,240,224.42/260,015.30
  6. Step 6: Final answer
    x = 254,720.55

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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.