Home / 310,318,100.72-428,647,756.42-230,012,889.04

Finding the Fourth Proportional to 310,318,100.72, 428,647,756.42 and 230,012,889.04

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Solution

The fourth proportional to 310,318,100.72, 428,647,756.42 and 230,012,889.04 is: 317,720,779.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,318,100.72 : 428,647,756.42 = 230,012,889.04 : x
  2. Step 2: Convert to fraction form
    310,318,100.72/428,647,756.42 = 230,012,889.04/x
  3. Step 3: Cross multiply
    310,318,100.72x = 428,647,756.42 × 230,012,889.04
  4. Step 4: Simplify right side
    310,318,100.72x = 98,594,508,834,678,400
  5. Step 5: Solve for x
    x = 98,594,508,834,678,400/310,318,100.72
  6. Step 6: Final answer
    x = 317,720,779.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.