Home / 330,695.12-456,456.40-215,991.32

Finding the Fourth Proportional to 330,695.12, 456,456.40 and 215,991.32

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Solution

The fourth proportional to 330,695.12, 456,456.40 and 215,991.32 is: 298,131.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,695.12 : 456,456.40 = 215,991.32 : x
  2. Step 2: Convert to fraction form
    330,695.12/456,456.40 = 215,991.32/x
  3. Step 3: Cross multiply
    330,695.12x = 456,456.40 × 215,991.32
  4. Step 4: Simplify right side
    330,695.12x = 98,590,620,358.45
  5. Step 5: Solve for x
    x = 98,590,620,358.45/330,695.12
  6. Step 6: Final answer
    x = 298,131.46

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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.