Home / 287,938.88-397,141.44-211,433.96

Finding the Fourth Proportional to 287,938.88, 397,141.44 and 211,433.96

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Solution

The fourth proportional to 287,938.88, 397,141.44 and 211,433.96 is: 291,621.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,938.88 : 397,141.44 = 211,433.96 : x
  2. Step 2: Convert to fraction form
    287,938.88/397,141.44 = 211,433.96/x
  3. Step 3: Cross multiply
    287,938.88x = 397,141.44 × 211,433.96
  4. Step 4: Simplify right side
    287,938.88x = 83,969,187,339.30
  5. Step 5: Solve for x
    x = 83,969,187,339.30/287,938.88
  6. Step 6: Final answer
    x = 291,621.57

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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.