Home / 330,505.18-455,929.26-215,850.93

Finding the Fourth Proportional to 330,505.18, 455,929.26 and 215,850.93

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Solution

The fourth proportional to 330,505.18, 455,929.26 and 215,850.93 is: 297,764.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,505.18 : 455,929.26 = 215,850.93 : x
  2. Step 2: Convert to fraction form
    330,505.18/455,929.26 = 215,850.93/x
  3. Step 3: Cross multiply
    330,505.18x = 455,929.26 × 215,850.93
  4. Step 4: Simplify right side
    330,505.18x = 98,412,754,785.21
  5. Step 5: Solve for x
    x = 98,412,754,785.21/330,505.18
  6. Step 6: Final answer
    x = 297,764.64

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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.