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Finding the Fourth Proportional to 489,908,003.72, 734,606,841 and 231,053,721.44

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Solution

The fourth proportional to 489,908,003.72, 734,606,841 and 231,053,721.44 is: 346,460,239.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,908,003.72 : 734,606,841 = 231,053,721.44 : x
  2. Step 2: Convert to fraction form
    489,908,003.72/734,606,841 = 231,053,721.44/x
  3. Step 3: Cross multiply
    489,908,003.72x = 734,606,841 × 231,053,721.44
  4. Step 4: Simplify right side
    489,908,003.72x = 169,733,644,408,332,384
  5. Step 5: Solve for x
    x = 169,733,644,408,332,384/489,908,003.72
  6. Step 6: Final answer
    x = 346,460,239.72

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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.