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Finding the Fourth Proportional to 306,068.10, 459,102.15 and 128,516.10

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Solution

The fourth proportional to 306,068.10, 459,102.15 and 128,516.10 is: 192,774.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,068.10 : 459,102.15 = 128,516.10 : x
  2. Step 2: Convert to fraction form
    306,068.10/459,102.15 = 128,516.10/x
  3. Step 3: Cross multiply
    306,068.10x = 459,102.15 × 128,516.10
  4. Step 4: Simplify right side
    306,068.10x = 59,002,017,819.62
  5. Step 5: Solve for x
    x = 59,002,017,819.62/306,068.10
  6. Step 6: Final answer
    x = 192,774.15

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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.