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Finding the Fourth Proportional to 319,579.40, 479,369.10 and 201,384.20

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Solution

The fourth proportional to 319,579.40, 479,369.10 and 201,384.20 is: 302,076.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,579.40 : 479,369.10 = 201,384.20 : x
  2. Step 2: Convert to fraction form
    319,579.40/479,369.10 = 201,384.20/x
  3. Step 3: Cross multiply
    319,579.40x = 479,369.10 × 201,384.20
  4. Step 4: Simplify right side
    319,579.40x = 96,537,362,708.22
  5. Step 5: Solve for x
    x = 96,537,362,708.22/319,579.40
  6. Step 6: Final answer
    x = 302,076.30

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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.