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Finding the Fourth Proportional to 313,967.96, 470,968.30 and 103,622.30

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Solution

The fourth proportional to 313,967.96, 470,968.30 and 103,622.30 is: 155,438.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,967.96 : 470,968.30 = 103,622.30 : x
  2. Step 2: Convert to fraction form
    313,967.96/470,968.30 = 103,622.30/x
  3. Step 3: Cross multiply
    313,967.96x = 470,968.30 × 103,622.30
  4. Step 4: Simplify right side
    313,967.96x = 48,802,818,473.09
  5. Step 5: Solve for x
    x = 48,802,818,473.09/313,967.96
  6. Step 6: Final answer
    x = 155,438.85

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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.