Home / 330,044.45-455,314.81-215,296.66

Finding the Fourth Proportional to 330,044.45, 455,314.81 and 215,296.66

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Solution

The fourth proportional to 330,044.45, 455,314.81 and 215,296.66 is: 297,013.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,044.45 : 455,314.81 = 215,296.66 : x
  2. Step 2: Convert to fraction form
    330,044.45/455,314.81 = 215,296.66/x
  3. Step 3: Cross multiply
    330,044.45x = 455,314.81 × 215,296.66
  4. Step 4: Simplify right side
    330,044.45x = 98,027,756,765.05
  5. Step 5: Solve for x
    x = 98,027,756,765.05/330,044.45
  6. Step 6: Final answer
    x = 297,013.80

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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.