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Finding the Fourth Proportional to 396,041.40, 594,056.70 and 129,810.60

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Solution

The fourth proportional to 396,041.40, 594,056.70 and 129,810.60 is: 194,714.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,041.40 : 594,056.70 = 129,810.60 : x
  2. Step 2: Convert to fraction form
    396,041.40/594,056.70 = 129,810.60/x
  3. Step 3: Cross multiply
    396,041.40x = 594,056.70 × 129,810.60
  4. Step 4: Simplify right side
    396,041.40x = 77,114,856,661.02
  5. Step 5: Solve for x
    x = 77,114,856,661.02/396,041.40
  6. Step 6: Final answer
    x = 194,714.13

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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.