Home / 260,004.18-390,209.64-133,639.32

Finding the Fourth Proportional to 260,004.18, 390,209.64 and 133,639.32

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Solution

The fourth proportional to 260,004.18, 390,209.64 and 133,639.32 is: 200,563.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,004.18 : 390,209.64 = 133,639.32 : x
  2. Step 2: Convert to fraction form
    260,004.18/390,209.64 = 133,639.32/x
  3. Step 3: Cross multiply
    260,004.18x = 390,209.64 × 133,639.32
  4. Step 4: Simplify right side
    260,004.18x = 52,147,350,947.04
  5. Step 5: Solve for x
    x = 52,147,350,947.04/260,004.18
  6. Step 6: Final answer
    x = 200,563.51

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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.