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Finding the Fourth Proportional to 306,091.40, 459,137.10 and 223,147.40

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Solution

The fourth proportional to 306,091.40, 459,137.10 and 223,147.40 is: 334,721.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,091.40 : 459,137.10 = 223,147.40 : x
  2. Step 2: Convert to fraction form
    306,091.40/459,137.10 = 223,147.40/x
  3. Step 3: Cross multiply
    306,091.40x = 459,137.10 × 223,147.40
  4. Step 4: Simplify right side
    306,091.40x = 102,455,250,108.54
  5. Step 5: Solve for x
    x = 102,455,250,108.54/306,091.40
  6. Step 6: Final answer
    x = 334,721.10

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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.