Home / 215,570.40-323,355.60-212,071.20

Finding the Fourth Proportional to 215,570.40, 323,355.60 and 212,071.20

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Solution

The fourth proportional to 215,570.40, 323,355.60 and 212,071.20 is: 318,106.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,570.40 : 323,355.60 = 212,071.20 : x
  2. Step 2: Convert to fraction form
    215,570.40/323,355.60 = 212,071.20/x
  3. Step 3: Cross multiply
    215,570.40x = 323,355.60 × 212,071.20
  4. Step 4: Simplify right side
    215,570.40x = 68,574,410,118.72
  5. Step 5: Solve for x
    x = 68,574,410,118.72/215,570.40
  6. Step 6: Final answer
    x = 318,106.80

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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.