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Finding the Fourth Proportional to 299,259.81, 448,885.25 and 139,246.13

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Solution

The fourth proportional to 299,259.81, 448,885.25 and 139,246.13 is: 208,867.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,259.81 : 448,885.25 = 139,246.13 : x
  2. Step 2: Convert to fraction form
    299,259.81/448,885.25 = 139,246.13/x
  3. Step 3: Cross multiply
    299,259.81x = 448,885.25 × 139,246.13
  4. Step 4: Simplify right side
    299,259.81x = 62,505,530,935.93
  5. Step 5: Solve for x
    x = 62,505,530,935.93/299,259.81
  6. Step 6: Final answer
    x = 208,867.11

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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.