Home / 216,638.40-324,877.98-74,443.35

Finding the Fourth Proportional to 216,638.40, 324,877.98 and 74,443.35

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Solution

The fourth proportional to 216,638.40, 324,877.98 and 74,443.35 is: 111,637.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,638.40 : 324,877.98 = 74,443.35 : x
  2. Step 2: Convert to fraction form
    216,638.40/324,877.98 = 74,443.35/x
  3. Step 3: Cross multiply
    216,638.40x = 324,877.98 × 74,443.35
  4. Step 4: Simplify right side
    216,638.40x = 24,185,005,172.43
  5. Step 5: Solve for x
    x = 24,185,005,172.43/216,638.40
  6. Step 6: Final answer
    x = 111,637.67

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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.