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Finding the Fourth Proportional to 306,072.70, 459,109.05 and 272,830.30

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Solution

The fourth proportional to 306,072.70, 459,109.05 and 272,830.30 is: 409,245.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,072.70 : 459,109.05 = 272,830.30 : x
  2. Step 2: Convert to fraction form
    306,072.70/459,109.05 = 272,830.30/x
  3. Step 3: Cross multiply
    306,072.70x = 459,109.05 × 272,830.30
  4. Step 4: Simplify right side
    306,072.70x = 125,258,859,844.22
  5. Step 5: Solve for x
    x = 125,258,859,844.22/306,072.70
  6. Step 6: Final answer
    x = 409,245.45

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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.