Home / 439,622.10-659,433.15-203,426.10

Finding the Fourth Proportional to 439,622.10, 659,433.15 and 203,426.10

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Solution

The fourth proportional to 439,622.10, 659,433.15 and 203,426.10 is: 305,139.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,622.10 : 659,433.15 = 203,426.10 : x
  2. Step 2: Convert to fraction form
    439,622.10/659,433.15 = 203,426.10/x
  3. Step 3: Cross multiply
    439,622.10x = 659,433.15 × 203,426.10
  4. Step 4: Simplify right side
    439,622.10x = 134,145,913,915.22
  5. Step 5: Solve for x
    x = 134,145,913,915.22/439,622.10
  6. Step 6: Final answer
    x = 305,139.15

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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.