Home / 399,281.18-550,999.60-217,984.34

Finding the Fourth Proportional to 399,281.18, 550,999.60 and 217,984.34

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Solution

The fourth proportional to 399,281.18, 550,999.60 and 217,984.34 is: 300,813.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,281.18 : 550,999.60 = 217,984.34 : x
  2. Step 2: Convert to fraction form
    399,281.18/550,999.60 = 217,984.34/x
  3. Step 3: Cross multiply
    399,281.18x = 550,999.60 × 217,984.34
  4. Step 4: Simplify right side
    399,281.18x = 120,109,284,146.26
  5. Step 5: Solve for x
    x = 120,109,284,146.26/399,281.18
  6. Step 6: Final answer
    x = 300,813.79

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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.