Home / 330,117.40-455,563.38-186,905.08

Finding the Fourth Proportional to 330,117.40, 455,563.38 and 186,905.08

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Solution

The fourth proportional to 330,117.40, 455,563.38 and 186,905.08 is: 257,929.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,117.40 : 455,563.38 = 186,905.08 : x
  2. Step 2: Convert to fraction form
    330,117.40/455,563.38 = 186,905.08/x
  3. Step 3: Cross multiply
    330,117.40x = 455,563.38 × 186,905.08
  4. Step 4: Simplify right side
    330,117.40x = 85,147,109,983.97
  5. Step 5: Solve for x
    x = 85,147,109,983.97/330,117.40
  6. Step 6: Final answer
    x = 257,929.78

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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.