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Finding the Fourth Proportional to 325,386.87, 448,802.42 and 298,615.83

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Solution

The fourth proportional to 325,386.87, 448,802.42 and 298,615.83 is: 411,877.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,386.87 : 448,802.42 = 298,615.83 : x
  2. Step 2: Convert to fraction form
    325,386.87/448,802.42 = 298,615.83/x
  3. Step 3: Cross multiply
    325,386.87x = 448,802.42 × 298,615.83
  4. Step 4: Simplify right side
    325,386.87x = 134,019,505,661.23
  5. Step 5: Solve for x
    x = 134,019,505,661.23/325,386.87
  6. Step 6: Final answer
    x = 411,877.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.