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Finding the Fourth Proportional to 448,368.60, 673,589.70 and 308,400.60

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Solution

The fourth proportional to 448,368.60, 673,589.70 and 308,400.60 is: 463,314.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,368.60 : 673,589.70 = 308,400.60 : x
  2. Step 2: Convert to fraction form
    448,368.60/673,589.70 = 308,400.60/x
  3. Step 3: Cross multiply
    448,368.60x = 673,589.70 × 308,400.60
  4. Step 4: Simplify right side
    448,368.60x = 207,735,467,633.82
  5. Step 5: Solve for x
    x = 207,735,467,633.82/448,368.60
  6. Step 6: Final answer
    x = 463,314.04

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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.