Home / 397,254.02-548,221.37-215,978.15

Finding the Fourth Proportional to 397,254.02, 548,221.37 and 215,978.15

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Solution

The fourth proportional to 397,254.02, 548,221.37 and 215,978.15 is: 298,055.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,254.02 : 548,221.37 = 215,978.15 : x
  2. Step 2: Convert to fraction form
    397,254.02/548,221.37 = 215,978.15/x
  3. Step 3: Cross multiply
    397,254.02x = 548,221.37 × 215,978.15
  4. Step 4: Simplify right side
    397,254.02x = 118,403,834,489.98
  5. Step 5: Solve for x
    x = 118,403,834,489.98/397,254.02
  6. Step 6: Final answer
    x = 298,055.72

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1.5x scale

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.