Home / 339,936,415.80-509,904,623.70-258,307,078.20

Finding the Fourth Proportional to 339,936,415.80, 509,904,623.70 and 258,307,078.20

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Solution

The fourth proportional to 339,936,415.80, 509,904,623.70 and 258,307,078.20 is: 387,460,617.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,936,415.80 : 509,904,623.70 = 258,307,078.20 : x
  2. Step 2: Convert to fraction form
    339,936,415.80/509,904,623.70 = 258,307,078.20/x
  3. Step 3: Cross multiply
    339,936,415.80x = 509,904,623.70 × 258,307,078.20
  4. Step 4: Simplify right side
    339,936,415.80x = 131,711,973,508,617,472
  5. Step 5: Solve for x
    x = 131,711,973,508,617,472/339,936,415.80
  6. Step 6: Final answer
    x = 387,460,617.30

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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.