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Finding the Fourth Proportional to 485,858.64, 670,483.16 and 270,998.54

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Solution

The fourth proportional to 485,858.64, 670,483.16 and 270,998.54 is: 373,977.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,858.64 : 670,483.16 = 270,998.54 : x
  2. Step 2: Convert to fraction form
    485,858.64/670,483.16 = 270,998.54/x
  3. Step 3: Cross multiply
    485,858.64x = 670,483.16 × 270,998.54
  4. Step 4: Simplify right side
    485,858.64x = 181,699,957,454.59
  5. Step 5: Solve for x
    x = 181,699,957,454.59/485,858.64
  6. Step 6: Final answer
    x = 373,977.00

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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.