Home / 612,172.76-917,733.20-212,761.64

Finding the Fourth Proportional to 612,172.76, 917,733.20 and 212,761.64

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Solution

The fourth proportional to 612,172.76, 917,733.20 and 212,761.64 is: 318,959.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,172.76 : 917,733.20 = 212,761.64 : x
  2. Step 2: Convert to fraction form
    612,172.76/917,733.20 = 212,761.64/x
  3. Step 3: Cross multiply
    612,172.76x = 917,733.20 × 212,761.64
  4. Step 4: Simplify right side
    612,172.76x = 195,258,420,714.45
  5. Step 5: Solve for x
    x = 195,258,420,714.45/612,172.76
  6. Step 6: Final answer
    x = 318,959.67

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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.