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Finding the Fourth Proportional to 485,557.81, 670,070.69 and 270,693.57

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Solution

The fourth proportional to 485,557.81, 670,070.69 and 270,693.57 is: 373,557.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,557.81 : 670,070.69 = 270,693.57 : x
  2. Step 2: Convert to fraction form
    485,557.81/670,070.69 = 270,693.57/x
  3. Step 3: Cross multiply
    485,557.81x = 670,070.69 × 270,693.57
  4. Step 4: Simplify right side
    485,557.81x = 181,383,822,524.64
  5. Step 5: Solve for x
    x = 181,383,822,524.64/485,557.81
  6. Step 6: Final answer
    x = 373,557.63

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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.