Home / 253,531,561.40-380,351,929.26-78,651,051.56

Finding the Fourth Proportional to 253,531,561.40, 380,351,929.26 and 78,651,051.56

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Solution

The fourth proportional to 253,531,561.40, 380,351,929.26 and 78,651,051.56 is: 117,993,511.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,531,561.40 : 380,351,929.26 = 78,651,051.56 : x
  2. Step 2: Convert to fraction form
    253,531,561.40/380,351,929.26 = 78,651,051.56/x
  3. Step 3: Cross multiply
    253,531,561.40x = 380,351,929.26 × 78,651,051.56
  4. Step 4: Simplify right side
    253,531,561.40x = 29,915,079,199,173,732
  5. Step 5: Solve for x
    x = 29,915,079,199,173,732/253,531,561.40
  6. Step 6: Final answer
    x = 117,993,511.47

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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.