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Finding the Fourth Proportional to 485,554.88, 670,066.14 and 270,690.64

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Solution

The fourth proportional to 485,554.88, 670,066.14 and 270,690.64 is: 373,553.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,554.88 : 670,066.14 = 270,690.64 : x
  2. Step 2: Convert to fraction form
    485,554.88/670,066.14 = 270,690.64/x
  3. Step 3: Cross multiply
    485,554.88x = 670,066.14 × 270,690.64
  4. Step 4: Simplify right side
    485,554.88x = 181,380,632,278.93
  5. Step 5: Solve for x
    x = 181,380,632,278.93/485,554.88
  6. Step 6: Final answer
    x = 373,553.31

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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.