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Finding the Fourth Proportional to 439,928.40, 658,337.40 and 299,960.40

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Solution

The fourth proportional to 439,928.40, 658,337.40 and 299,960.40 is: 448,880.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,928.40 : 658,337.40 = 299,960.40 : x
  2. Step 2: Convert to fraction form
    439,928.40/658,337.40 = 299,960.40/x
  3. Step 3: Cross multiply
    439,928.40x = 658,337.40 × 299,960.40
  4. Step 4: Simplify right side
    439,928.40x = 197,475,149,838.96
  5. Step 5: Solve for x
    x = 197,475,149,838.96/439,928.40
  6. Step 6: Final answer
    x = 448,880.20

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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.