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Finding the Fourth Proportional to 306,003.70, 459,005.55 and 128,451.70

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Solution

The fourth proportional to 306,003.70, 459,005.55 and 128,451.70 is: 192,677.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,003.70 : 459,005.55 = 128,451.70 : x
  2. Step 2: Convert to fraction form
    306,003.70/459,005.55 = 128,451.70/x
  3. Step 3: Cross multiply
    306,003.70x = 459,005.55 × 128,451.70
  4. Step 4: Simplify right side
    306,003.70x = 58,960,043,206.94
  5. Step 5: Solve for x
    x = 58,960,043,206.94/306,003.70
  6. Step 6: Final answer
    x = 192,677.55

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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.