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Finding the Fourth Proportional to 298,417.60, 447,626.40 and 120,930.40

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Solution

The fourth proportional to 298,417.60, 447,626.40 and 120,930.40 is: 181,395.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,417.60 : 447,626.40 = 120,930.40 : x
  2. Step 2: Convert to fraction form
    298,417.60/447,626.40 = 120,930.40/x
  3. Step 3: Cross multiply
    298,417.60x = 447,626.40 × 120,930.40
  4. Step 4: Simplify right side
    298,417.60x = 54,131,639,602.56
  5. Step 5: Solve for x
    x = 54,131,639,602.56/298,417.60
  6. Step 6: Final answer
    x = 181,395.60

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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.