Home / 397,109.10-548,014.80-215,821.02

Finding the Fourth Proportional to 397,109.10, 548,014.80 and 215,821.02

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Solution

The fourth proportional to 397,109.10, 548,014.80 and 215,821.02 is: 297,835.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,109.10 : 548,014.80 = 215,821.02 : x
  2. Step 2: Convert to fraction form
    397,109.10/548,014.80 = 215,821.02/x
  3. Step 3: Cross multiply
    397,109.10x = 548,014.80 × 215,821.02
  4. Step 4: Simplify right side
    397,109.10x = 118,273,113,111.10
  5. Step 5: Solve for x
    x = 118,273,113,111.10/397,109.10
  6. Step 6: Final answer
    x = 297,835.31

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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.