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Finding the Fourth Proportional to 298,290.48, 411,650.64 and 170,990.16

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Solution

The fourth proportional to 298,290.48, 411,650.64 and 170,990.16 is: 235,972.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,290.48 : 411,650.64 = 170,990.16 : x
  2. Step 2: Convert to fraction form
    298,290.48/411,650.64 = 170,990.16/x
  3. Step 3: Cross multiply
    298,290.48x = 411,650.64 × 170,990.16
  4. Step 4: Simplify right side
    298,290.48x = 70,388,208,797.70
  5. Step 5: Solve for x
    x = 70,388,208,797.70/298,290.48
  6. Step 6: Final answer
    x = 235,972.03

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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.