Home / 331,295.20-457,070.80-216,640.96

Finding the Fourth Proportional to 331,295.20, 457,070.80 and 216,640.96

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Solution

The fourth proportional to 331,295.20, 457,070.80 and 216,640.96 is: 298,888.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,295.20 : 457,070.80 = 216,640.96 : x
  2. Step 2: Convert to fraction form
    331,295.20/457,070.80 = 216,640.96/x
  3. Step 3: Cross multiply
    331,295.20x = 457,070.80 × 216,640.96
  4. Step 4: Simplify right side
    331,295.20x = 99,020,256,899.97
  5. Step 5: Solve for x
    x = 99,020,256,899.97/331,295.20
  6. Step 6: Final answer
    x = 298,888.29

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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.