Home / 330,878.16-456,367.20-209,915.04

Finding the Fourth Proportional to 330,878.16, 456,367.20 and 209,915.04

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Solution

The fourth proportional to 330,878.16, 456,367.20 and 209,915.04 is: 289,527.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,878.16 : 456,367.20 = 209,915.04 : x
  2. Step 2: Convert to fraction form
    330,878.16/456,367.20 = 209,915.04/x
  3. Step 3: Cross multiply
    330,878.16x = 456,367.20 × 209,915.04
  4. Step 4: Simplify right side
    330,878.16x = 95,798,339,042.69
  5. Step 5: Solve for x
    x = 95,798,339,042.69/330,878.16
  6. Step 6: Final answer
    x = 289,527.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.