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Finding the Fourth Proportional to 309,698.40, 463,964.40 and 159,427.20

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Solution

The fourth proportional to 309,698.40, 463,964.40 and 159,427.20 is: 238,840.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,698.40 : 463,964.40 = 159,427.20 : x
  2. Step 2: Convert to fraction form
    309,698.40/463,964.40 = 159,427.20/x
  3. Step 3: Cross multiply
    309,698.40x = 463,964.40 × 159,427.20
  4. Step 4: Simplify right side
    309,698.40x = 73,968,545,191.68
  5. Step 5: Solve for x
    x = 73,968,545,191.68/309,698.40
  6. Step 6: Final answer
    x = 238,840.58

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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.