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Finding the Fourth Proportional to 306,078.10, 459,117.15 and 211,599.70

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Solution

The fourth proportional to 306,078.10, 459,117.15 and 211,599.70 is: 317,399.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,078.10 : 459,117.15 = 211,599.70 : x
  2. Step 2: Convert to fraction form
    306,078.10/459,117.15 = 211,599.70/x
  3. Step 3: Cross multiply
    306,078.10x = 459,117.15 × 211,599.70
  4. Step 4: Simplify right side
    306,078.10x = 97,149,051,204.86
  5. Step 5: Solve for x
    x = 97,149,051,204.86/306,078.10
  6. Step 6: Final answer
    x = 317,399.55

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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.