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Finding the Fourth Proportional to 630,297.95, 945,455.15 and 209,573.82

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Solution

The fourth proportional to 630,297.95, 945,455.15 and 209,573.82 is: 314,363.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,297.95 : 945,455.15 = 209,573.82 : x
  2. Step 2: Convert to fraction form
    630,297.95/945,455.15 = 209,573.82/x
  3. Step 3: Cross multiply
    630,297.95x = 945,455.15 × 209,573.82
  4. Step 4: Simplify right side
    630,297.95x = 198,142,646,376.30
  5. Step 5: Solve for x
    x = 198,142,646,376.30/630,297.95
  6. Step 6: Final answer
    x = 314,363.47

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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.