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Finding the Fourth Proportional to 306,054.45, 428,826.15 and 306,054.45

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Solution

The fourth proportional to 306,054.45, 428,826.15 and 306,054.45 is: 428,826.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,054.45 : 428,826.15 = 306,054.45 : x
  2. Step 2: Convert to fraction form
    306,054.45/428,826.15 = 306,054.45/x
  3. Step 3: Cross multiply
    306,054.45x = 428,826.15 × 306,054.45
  4. Step 4: Simplify right side
    306,054.45x = 131,244,151,483.87
  5. Step 5: Solve for x
    x = 131,244,151,483.87/306,054.45
  6. Step 6: Final answer
    x = 428,826.15

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.