Home / 442,197,928.80-663,296,893.20-212,048,546.40

Finding the Fourth Proportional to 442,197,928.80, 663,296,893.20 and 212,048,546.40

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Solution

The fourth proportional to 442,197,928.80, 663,296,893.20 and 212,048,546.40 is: 318,072,819.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,197,928.80 : 663,296,893.20 = 212,048,546.40 : x
  2. Step 2: Convert to fraction form
    442,197,928.80/663,296,893.20 = 212,048,546.40/x
  3. Step 3: Cross multiply
    442,197,928.80x = 663,296,893.20 × 212,048,546.40
  4. Step 4: Simplify right side
    442,197,928.80x = 140,651,142,034,696,064
  5. Step 5: Solve for x
    x = 140,651,142,034,696,064/442,197,928.80
  6. Step 6: Final answer
    x = 318,072,819.60

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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.