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Finding the Fourth Proportional to 220,786,804.82, 304,687,805.63 and 121,671,108.47

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Solution

The fourth proportional to 220,786,804.82, 304,687,805.63 and 121,671,108.47 is: 167,907,240.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,786,804.82 : 304,687,805.63 = 121,671,108.47 : x
  2. Step 2: Convert to fraction form
    220,786,804.82/304,687,805.63 = 121,671,108.47/x
  3. Step 3: Cross multiply
    220,786,804.82x = 304,687,805.63 × 121,671,108.47
  4. Step 4: Simplify right side
    220,786,804.82x = 37,071,703,046,162,216
  5. Step 5: Solve for x
    x = 37,071,703,046,162,216/220,786,804.82
  6. Step 6: Final answer
    x = 167,907,240.10

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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.