Home / 453,145.19-679,717.71-215,768.21

Finding the Fourth Proportional to 453,145.19, 679,717.71 and 215,768.21

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Solution

The fourth proportional to 453,145.19, 679,717.71 and 215,768.21 is: 323,652.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,145.19 : 679,717.71 = 215,768.21 : x
  2. Step 2: Convert to fraction form
    453,145.19/679,717.71 = 215,768.21/x
  3. Step 3: Cross multiply
    453,145.19x = 679,717.71 × 215,768.21
  4. Step 4: Simplify right side
    453,145.19x = 146,661,470,193.41
  5. Step 5: Solve for x
    x = 146,661,470,193.41/453,145.19
  6. Step 6: Final answer
    x = 323,652.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.