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Finding the Fourth Proportional to 298,101.40, 447,152.10 and 76,485.40

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Solution

The fourth proportional to 298,101.40, 447,152.10 and 76,485.40 is: 114,728.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,101.40 : 447,152.10 = 76,485.40 : x
  2. Step 2: Convert to fraction form
    298,101.40/447,152.10 = 76,485.40/x
  3. Step 3: Cross multiply
    298,101.40x = 447,152.10 × 76,485.40
  4. Step 4: Simplify right side
    298,101.40x = 34,200,607,229.34
  5. Step 5: Solve for x
    x = 34,200,607,229.34/298,101.40
  6. Step 6: Final answer
    x = 114,728.10

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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.