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Finding the Fourth Proportional to 213,620.10, 320,620.23 and 113,862.66

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Solution

The fourth proportional to 213,620.10, 320,620.23 and 113,862.66 is: 170,895.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,620.10 : 320,620.23 = 113,862.66 : x
  2. Step 2: Convert to fraction form
    213,620.10/320,620.23 = 113,862.66/x
  3. Step 3: Cross multiply
    213,620.10x = 320,620.23 × 113,862.66
  4. Step 4: Simplify right side
    213,620.10x = 36,506,672,237.61
  5. Step 5: Solve for x
    x = 36,506,672,237.61/213,620.10
  6. Step 6: Final answer
    x = 170,895.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.