Home / 259,315.20-389,145.60-119,001.60

Finding the Fourth Proportional to 259,315.20, 389,145.60 and 119,001.60

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Solution

The fourth proportional to 259,315.20, 389,145.60 and 119,001.60 is: 178,581.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,315.20 : 389,145.60 = 119,001.60 : x
  2. Step 2: Convert to fraction form
    259,315.20/389,145.60 = 119,001.60/x
  3. Step 3: Cross multiply
    259,315.20x = 389,145.60 × 119,001.60
  4. Step 4: Simplify right side
    259,315.20x = 46,308,949,032.96
  5. Step 5: Solve for x
    x = 46,308,949,032.96/259,315.20
  6. Step 6: Final answer
    x = 178,581.70

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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.