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Finding the Fourth Proportional to 554,606.40, 831,906.90 and 217,408.80

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Solution

The fourth proportional to 554,606.40, 831,906.90 and 217,408.80 is: 326,112.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,606.40 : 831,906.90 = 217,408.80 : x
  2. Step 2: Convert to fraction form
    554,606.40/831,906.90 = 217,408.80/x
  3. Step 3: Cross multiply
    554,606.40x = 831,906.90 × 217,408.80
  4. Step 4: Simplify right side
    554,606.40x = 180,863,880,840.72
  5. Step 5: Solve for x
    x = 180,863,880,840.72/554,606.40
  6. Step 6: Final answer
    x = 326,112.14

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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.