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Finding the Fourth Proportional to 285,133.10, 393,469.65 and 162,630.32

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Solution

The fourth proportional to 285,133.10, 393,469.65 and 162,630.32 is: 224,421.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,133.10 : 393,469.65 = 162,630.32 : x
  2. Step 2: Convert to fraction form
    285,133.10/393,469.65 = 162,630.32/x
  3. Step 3: Cross multiply
    285,133.10x = 393,469.65 × 162,630.32
  4. Step 4: Simplify right side
    285,133.10x = 63,990,093,122.44
  5. Step 5: Solve for x
    x = 63,990,093,122.44/285,133.10
  6. Step 6: Final answer
    x = 224,421.84

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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.