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Finding the Fourth Proportional to 234,870.81, 324,205.77 and 139,377.48

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Solution

The fourth proportional to 234,870.81, 324,205.77 and 139,377.48 is: 192,390.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,870.81 : 324,205.77 = 139,377.48 : x
  2. Step 2: Convert to fraction form
    234,870.81/324,205.77 = 139,377.48/x
  3. Step 3: Cross multiply
    234,870.81x = 324,205.77 × 139,377.48
  4. Step 4: Simplify right side
    234,870.81x = 45,186,983,224.06
  5. Step 5: Solve for x
    x = 45,186,983,224.06/234,870.81
  6. Step 6: Final answer
    x = 192,390.80

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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.