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Finding the Fourth Proportional to 396,030.30, 594,045.45 and 143,310.30

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Solution

The fourth proportional to 396,030.30, 594,045.45 and 143,310.30 is: 214,965.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,030.30 : 594,045.45 = 143,310.30 : x
  2. Step 2: Convert to fraction form
    396,030.30/594,045.45 = 143,310.30/x
  3. Step 3: Cross multiply
    396,030.30x = 594,045.45 × 143,310.30
  4. Step 4: Simplify right side
    396,030.30x = 85,132,831,653.14
  5. Step 5: Solve for x
    x = 85,132,831,653.14/396,030.30
  6. Step 6: Final answer
    x = 214,965.45

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Double scale
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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.