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Finding the Fourth Proportional to 306,065.20, 459,097.80 and 106,319.20

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Solution

The fourth proportional to 306,065.20, 459,097.80 and 106,319.20 is: 159,478.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,065.20 : 459,097.80 = 106,319.20 : x
  2. Step 2: Convert to fraction form
    306,065.20/459,097.80 = 106,319.20/x
  3. Step 3: Cross multiply
    306,065.20x = 459,097.80 × 106,319.20
  4. Step 4: Simplify right side
    306,065.20x = 48,810,910,817.76
  5. Step 5: Solve for x
    x = 48,810,910,817.76/306,065.20
  6. Step 6: Final answer
    x = 159,478.80

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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.