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Finding the Fourth Proportional to 543,518.98, 815,277.39 and 144,199.78

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Solution

The fourth proportional to 543,518.98, 815,277.39 and 144,199.78 is: 216,299.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,518.98 : 815,277.39 = 144,199.78 : x
  2. Step 2: Convert to fraction form
    543,518.98/815,277.39 = 144,199.78/x
  3. Step 3: Cross multiply
    543,518.98x = 815,277.39 × 144,199.78
  4. Step 4: Simplify right side
    543,518.98x = 117,562,820,276.97
  5. Step 5: Solve for x
    x = 117,562,820,276.97/543,518.98
  6. Step 6: Final answer
    x = 216,299.38

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Similar ratio
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1.5x scale

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.