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Finding the Fourth Proportional to 485,780.82, 670,386.15 and 270,897.81

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Solution

The fourth proportional to 485,780.82, 670,386.15 and 270,897.81 is: 373,843.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,780.82 : 670,386.15 = 270,897.81 : x
  2. Step 2: Convert to fraction form
    485,780.82/670,386.15 = 270,897.81/x
  3. Step 3: Cross multiply
    485,780.82x = 670,386.15 × 270,897.81
  4. Step 4: Simplify right side
    485,780.82x = 181,606,139,889.33
  5. Step 5: Solve for x
    x = 181,606,139,889.33/485,780.82
  6. Step 6: Final answer
    x = 373,843.78

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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.