Home / 278,508,835.69-384,351,408.01-153,065,478.06

Finding the Fourth Proportional to 278,508,835.69, 384,351,408.01 and 153,065,478.06

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Solution

The fourth proportional to 278,508,835.69, 384,351,408.01 and 153,065,478.06 is: 211,235,424.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,508,835.69 : 384,351,408.01 = 153,065,478.06 : x
  2. Step 2: Convert to fraction form
    278,508,835.69/384,351,408.01 = 153,065,478.06/x
  3. Step 3: Cross multiply
    278,508,835.69x = 384,351,408.01 × 153,065,478.06
  4. Step 4: Simplify right side
    278,508,835.69x = 58,830,932,010,276,096
  5. Step 5: Solve for x
    x = 58,830,932,010,276,096/278,508,835.69
  6. Step 6: Final answer
    x = 211,235,424.06

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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.