Home / 455,440.20-683,160.30-218,725.80

Finding the Fourth Proportional to 455,440.20, 683,160.30 and 218,725.80

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Solution

The fourth proportional to 455,440.20, 683,160.30 and 218,725.80 is: 328,088.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,440.20 : 683,160.30 = 218,725.80 : x
  2. Step 2: Convert to fraction form
    455,440.20/683,160.30 = 218,725.80/x
  3. Step 3: Cross multiply
    455,440.20x = 683,160.30 × 218,725.80
  4. Step 4: Simplify right side
    455,440.20x = 149,424,783,145.74
  5. Step 5: Solve for x
    x = 149,424,783,145.74/455,440.20
  6. Step 6: Final answer
    x = 328,088.70

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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.