Home / 218,671.40-328,136.70-144,005.60

Finding the Fourth Proportional to 218,671.40, 328,136.70 and 144,005.60

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Solution

The fourth proportional to 218,671.40, 328,136.70 and 144,005.60 is: 216,093.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,671.40 : 328,136.70 = 144,005.60 : x
  2. Step 2: Convert to fraction form
    218,671.40/328,136.70 = 144,005.60/x
  3. Step 3: Cross multiply
    218,671.40x = 328,136.70 × 144,005.60
  4. Step 4: Simplify right side
    218,671.40x = 47,253,522,365.52
  5. Step 5: Solve for x
    x = 47,253,522,365.52/218,671.40
  6. Step 6: Final answer
    x = 216,093.75

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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.