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Finding the Fourth Proportional to 656,369.60, 984,554.40 and 213,137.60

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Solution

The fourth proportional to 656,369.60, 984,554.40 and 213,137.60 is: 319,706.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,369.60 : 984,554.40 = 213,137.60 : x
  2. Step 2: Convert to fraction form
    656,369.60/984,554.40 = 213,137.60/x
  3. Step 3: Cross multiply
    656,369.60x = 984,554.40 × 213,137.60
  4. Step 4: Simplify right side
    656,369.60x = 209,845,561,885.44
  5. Step 5: Solve for x
    x = 209,845,561,885.44/656,369.60
  6. Step 6: Final answer
    x = 319,706.40

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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.