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Finding the Fourth Proportional to 321,329.81, 442,923.59 and 253,237.56

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Solution

The fourth proportional to 321,329.81, 442,923.59 and 253,237.56 is: 349,064.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,329.81 : 442,923.59 = 253,237.56 : x
  2. Step 2: Convert to fraction form
    321,329.81/442,923.59 = 253,237.56/x
  3. Step 3: Cross multiply
    321,329.81x = 442,923.59 × 253,237.56
  4. Step 4: Simplify right side
    321,329.81x = 112,164,887,931.85
  5. Step 5: Solve for x
    x = 112,164,887,931.85/321,329.81
  6. Step 6: Final answer
    x = 349,064.69

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