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Finding the Fourth Proportional to 485,563.88, 670,078.58 and 270,699.64

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Solution

The fourth proportional to 485,563.88, 670,078.58 and 270,699.64 is: 373,565.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,563.88 : 670,078.58 = 270,699.64 : x
  2. Step 2: Convert to fraction form
    485,563.88/670,078.58 = 270,699.64/x
  3. Step 3: Cross multiply
    485,563.88x = 670,078.58 × 270,699.64
  4. Step 4: Simplify right side
    485,563.88x = 181,390,030,377.71
  5. Step 5: Solve for x
    x = 181,390,030,377.71/485,563.88
  6. Step 6: Final answer
    x = 373,565.74

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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.