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Finding the Fourth Proportional to 306,001.70, 459,002.55 and 128,449.70

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Solution

The fourth proportional to 306,001.70, 459,002.55 and 128,449.70 is: 192,674.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,001.70 : 459,002.55 = 128,449.70 : x
  2. Step 2: Convert to fraction form
    306,001.70/459,002.55 = 128,449.70/x
  3. Step 3: Cross multiply
    306,001.70x = 459,002.55 × 128,449.70
  4. Step 4: Simplify right side
    306,001.70x = 58,958,739,846.74
  5. Step 5: Solve for x
    x = 58,958,739,846.74/306,001.70
  6. Step 6: Final answer
    x = 192,674.55

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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.