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Finding the Fourth Proportional to 485,557.88, 670,070.30 and 270,693.64

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Solution

The fourth proportional to 485,557.88, 670,070.30 and 270,693.64 is: 373,557.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,557.88 : 670,070.30 = 270,693.64 : x
  2. Step 2: Convert to fraction form
    485,557.88/670,070.30 = 270,693.64/x
  3. Step 3: Cross multiply
    485,557.88x = 670,070.30 × 270,693.64
  4. Step 4: Simplify right side
    485,557.88x = 181,383,768,562.89
  5. Step 5: Solve for x
    x = 181,383,768,562.89/485,557.88
  6. Step 6: Final answer
    x = 373,557.46

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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.