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Finding the Fourth Proportional to 306,424.40, 459,636.60 and 148,960.40

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Solution

The fourth proportional to 306,424.40, 459,636.60 and 148,960.40 is: 223,440.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,424.40 : 459,636.60 = 148,960.40 : x
  2. Step 2: Convert to fraction form
    306,424.40/459,636.60 = 148,960.40/x
  3. Step 3: Cross multiply
    306,424.40x = 459,636.60 × 148,960.40
  4. Step 4: Simplify right side
    306,424.40x = 68,467,651,790.64
  5. Step 5: Solve for x
    x = 68,467,651,790.64/306,424.40
  6. Step 6: Final answer
    x = 223,440.60

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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.