Home / 389,016.88-536,845.64-216,945.72

Finding the Fourth Proportional to 389,016.88, 536,845.64 and 216,945.72

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Solution

The fourth proportional to 389,016.88, 536,845.64 and 216,945.72 is: 299,386.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,016.88 : 536,845.64 = 216,945.72 : x
  2. Step 2: Convert to fraction form
    389,016.88/536,845.64 = 216,945.72/x
  3. Step 3: Cross multiply
    389,016.88x = 536,845.64 × 216,945.72
  4. Step 4: Simplify right side
    389,016.88x = 116,466,365,006.36
  5. Step 5: Solve for x
    x = 116,466,365,006.36/389,016.88
  6. Step 6: Final answer
    x = 299,386.41

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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.