Home / 543,619.20-815,428.80-228,302.40

Finding the Fourth Proportional to 543,619.20, 815,428.80 and 228,302.40

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Solution

The fourth proportional to 543,619.20, 815,428.80 and 228,302.40 is: 342,453.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,619.20 : 815,428.80 = 228,302.40 : x
  2. Step 2: Convert to fraction form
    543,619.20/815,428.80 = 228,302.40/x
  3. Step 3: Cross multiply
    543,619.20x = 815,428.80 × 228,302.40
  4. Step 4: Simplify right side
    543,619.20x = 186,164,352,069.12
  5. Step 5: Solve for x
    x = 186,164,352,069.12/543,619.20
  6. Step 6: Final answer
    x = 342,453.60

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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.