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Finding the Fourth Proportional to 410,880.80, 616,321.20 and 210,922.40

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Solution

The fourth proportional to 410,880.80, 616,321.20 and 210,922.40 is: 316,383.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,880.80 : 616,321.20 = 210,922.40 : x
  2. Step 2: Convert to fraction form
    410,880.80/616,321.20 = 210,922.40/x
  3. Step 3: Cross multiply
    410,880.80x = 616,321.20 × 210,922.40
  4. Step 4: Simplify right side
    410,880.80x = 129,995,946,674.88
  5. Step 5: Solve for x
    x = 129,995,946,674.88/410,880.80
  6. Step 6: Final answer
    x = 316,383.60

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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.