Home / 309,815,012.85-427,555,211.09-168,691,706.40

Finding the Fourth Proportional to 309,815,012.85, 427,555,211.09 and 168,691,706.40

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Solution

The fourth proportional to 309,815,012.85, 427,555,211.09 and 168,691,706.40 is: 232,800,268.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,815,012.85 : 427,555,211.09 = 168,691,706.40 : x
  2. Step 2: Convert to fraction form
    309,815,012.85/427,555,211.09 = 168,691,706.40/x
  3. Step 3: Cross multiply
    309,815,012.85x = 427,555,211.09 × 168,691,706.40
  4. Step 4: Simplify right side
    309,815,012.85x = 72,125,018,138,984,304
  5. Step 5: Solve for x
    x = 72,125,018,138,984,304/309,815,012.85
  6. Step 6: Final answer
    x = 232,800,268.38

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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.