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Finding the Fourth Proportional to 420,369.37, 630,536.41 and 195,652.51

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Solution

The fourth proportional to 420,369.37, 630,536.41 and 195,652.51 is: 293,470.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,369.37 : 630,536.41 = 195,652.51 : x
  2. Step 2: Convert to fraction form
    420,369.37/630,536.41 = 195,652.51/x
  3. Step 3: Cross multiply
    420,369.37x = 630,536.41 × 195,652.51
  4. Step 4: Simplify right side
    420,369.37x = 123,366,031,262.89
  5. Step 5: Solve for x
    x = 123,366,031,262.89/420,369.37
  6. Step 6: Final answer
    x = 293,470.55

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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.