Home / 330,693.12-456,453.64-215,989.32

Finding the Fourth Proportional to 330,693.12, 456,453.64 and 215,989.32

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Solution

The fourth proportional to 330,693.12, 456,453.64 and 215,989.32 is: 298,128.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,693.12 : 456,453.64 = 215,989.32 : x
  2. Step 2: Convert to fraction form
    330,693.12/456,453.64 = 215,989.32/x
  3. Step 3: Cross multiply
    330,693.12x = 456,453.64 × 215,989.32
  4. Step 4: Simplify right side
    330,693.12x = 98,589,111,315.12
  5. Step 5: Solve for x
    x = 98,589,111,315.12/330,693.12
  6. Step 6: Final answer
    x = 298,128.70

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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.