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Finding the Fourth Proportional to 437,009.20, 655,513.80 and 259,716.40

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Solution

The fourth proportional to 437,009.20, 655,513.80 and 259,716.40 is: 389,574.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,009.20 : 655,513.80 = 259,716.40 : x
  2. Step 2: Convert to fraction form
    437,009.20/655,513.80 = 259,716.40/x
  3. Step 3: Cross multiply
    437,009.20x = 655,513.80 × 259,716.40
  4. Step 4: Simplify right side
    437,009.20x = 170,247,684,286.32
  5. Step 5: Solve for x
    x = 170,247,684,286.32/437,009.20
  6. Step 6: Final answer
    x = 389,574.60

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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.