Home / 330,369.20-456,128.92-253,751.30

Finding the Fourth Proportional to 330,369.20, 456,128.92 and 253,751.30

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Solution

The fourth proportional to 330,369.20, 456,128.92 and 253,751.30 is: 350,345.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,369.20 : 456,128.92 = 253,751.30 : x
  2. Step 2: Convert to fraction form
    330,369.20/456,128.92 = 253,751.30/x
  3. Step 3: Cross multiply
    330,369.20x = 456,128.92 × 253,751.30
  4. Step 4: Simplify right side
    330,369.20x = 115,743,308,730.35
  5. Step 5: Solve for x
    x = 115,743,308,730.35/330,369.20
  6. Step 6: Final answer
    x = 350,345.33

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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.