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Finding the Fourth Proportional to 298,420.60, 447,630.90 and 120,933.40

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Solution

The fourth proportional to 298,420.60, 447,630.90 and 120,933.40 is: 181,400.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,420.60 : 447,630.90 = 120,933.40 : x
  2. Step 2: Convert to fraction form
    298,420.60/447,630.90 = 120,933.40/x
  3. Step 3: Cross multiply
    298,420.60x = 447,630.90 × 120,933.40
  4. Step 4: Simplify right side
    298,420.60x = 54,133,526,682.06
  5. Step 5: Solve for x
    x = 54,133,526,682.06/298,420.60
  6. Step 6: Final answer
    x = 181,400.10

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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.