Home / 312,127.48-430,734.54-168,890.05

Finding the Fourth Proportional to 312,127.48, 430,734.54 and 168,890.05

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Solution

The fourth proportional to 312,127.48, 430,734.54 and 168,890.05 is: 233,067.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,127.48 : 430,734.54 = 168,890.05 : x
  2. Step 2: Convert to fraction form
    312,127.48/430,734.54 = 168,890.05/x
  3. Step 3: Cross multiply
    312,127.48x = 430,734.54 × 168,890.05
  4. Step 4: Simplify right side
    312,127.48x = 72,746,777,997.33
  5. Step 5: Solve for x
    x = 72,746,777,997.33/312,127.48
  6. Step 6: Final answer
    x = 233,067.52

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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.