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Finding the Fourth Proportional to 290,051.30, 434,558.55 and 248,579.30

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Solution

The fourth proportional to 290,051.30, 434,558.55 and 248,579.30 is: 372,424.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,051.30 : 434,558.55 = 248,579.30 : x
  2. Step 2: Convert to fraction form
    290,051.30/434,558.55 = 248,579.30/x
  3. Step 3: Cross multiply
    290,051.30x = 434,558.55 × 248,579.30
  4. Step 4: Simplify right side
    290,051.30x = 108,022,260,168.02
  5. Step 5: Solve for x
    x = 108,022,260,168.02/290,051.30
  6. Step 6: Final answer
    x = 372,424.67

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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.