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Finding the Fourth Proportional to 630,300.45, 945,458.90 and 209,576.32

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Solution

The fourth proportional to 630,300.45, 945,458.90 and 209,576.32 is: 314,367.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,300.45 : 945,458.90 = 209,576.32 : x
  2. Step 2: Convert to fraction form
    630,300.45/945,458.90 = 209,576.32/x
  3. Step 3: Cross multiply
    630,300.45x = 945,458.90 × 209,576.32
  4. Step 4: Simplify right side
    630,300.45x = 198,145,796,973.25
  5. Step 5: Solve for x
    x = 198,145,796,973.25/630,300.45
  6. Step 6: Final answer
    x = 314,367.21

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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.