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Finding the Fourth Proportional to 144,620.40, 216,895.62 and 55,817.28

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Solution

The fourth proportional to 144,620.40, 216,895.62 and 55,817.28 is: 83,712.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,620.40 : 216,895.62 = 55,817.28 : x
  2. Step 2: Convert to fraction form
    144,620.40/216,895.62 = 55,817.28/x
  3. Step 3: Cross multiply
    144,620.40x = 216,895.62 × 55,817.28
  4. Step 4: Simplify right side
    144,620.40x = 12,106,523,552.31
  5. Step 5: Solve for x
    x = 12,106,523,552.31/144,620.40
  6. Step 6: Final answer
    x = 83,712.42

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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.