Home / 213,403.12-320,437.60-203,938.28

Finding the Fourth Proportional to 213,403.12, 320,437.60 and 203,938.28

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Solution

The fourth proportional to 213,403.12, 320,437.60 and 203,938.28 is: 306,225.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,403.12 : 320,437.60 = 203,938.28 : x
  2. Step 2: Convert to fraction form
    213,403.12/320,437.60 = 203,938.28/x
  3. Step 3: Cross multiply
    213,403.12x = 320,437.60 × 203,938.28
  4. Step 4: Simplify right side
    213,403.12x = 65,349,492,991.33
  5. Step 5: Solve for x
    x = 65,349,492,991.33/213,403.12
  6. Step 6: Final answer
    x = 306,225.57

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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.