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Finding the Fourth Proportional to 384,028.30, 576,042.45 and 218,140.30

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Solution

The fourth proportional to 384,028.30, 576,042.45 and 218,140.30 is: 327,210.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,028.30 : 576,042.45 = 218,140.30 : x
  2. Step 2: Convert to fraction form
    384,028.30/576,042.45 = 218,140.30/x
  3. Step 3: Cross multiply
    384,028.30x = 576,042.45 × 218,140.30
  4. Step 4: Simplify right side
    384,028.30x = 125,658,072,855.74
  5. Step 5: Solve for x
    x = 125,658,072,855.74/384,028.30
  6. Step 6: Final answer
    x = 327,210.45

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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.