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Finding the Fourth Proportional to 485,609.83, 670,142.36 and 270,763.51

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Solution

The fourth proportional to 485,609.83, 670,142.36 and 270,763.51 is: 373,654.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,609.83 : 670,142.36 = 270,763.51 : x
  2. Step 2: Convert to fraction form
    485,609.83/670,142.36 = 270,763.51/x
  3. Step 3: Cross multiply
    485,609.83x = 670,142.36 × 270,763.51
  4. Step 4: Simplify right side
    485,609.83x = 181,450,097,851.35
  5. Step 5: Solve for x
    x = 181,450,097,851.35/485,609.83
  6. Step 6: Final answer
    x = 373,654.08

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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.