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Finding the Fourth Proportional to 630,485.10, 945,657.72 and 225,661.05

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Solution

The fourth proportional to 630,485.10, 945,657.72 and 225,661.05 is: 338,466.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,485.10 : 945,657.72 = 225,661.05 : x
  2. Step 2: Convert to fraction form
    630,485.10/945,657.72 = 225,661.05/x
  3. Step 3: Cross multiply
    630,485.10x = 945,657.72 × 225,661.05
  4. Step 4: Simplify right side
    630,485.10x = 213,398,114,035.81
  5. Step 5: Solve for x
    x = 213,398,114,035.81/630,485.10
  6. Step 6: Final answer
    x = 338,466.55

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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.