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Finding the Fourth Proportional to 432,826.80, 649,240.20 and 255,418.80

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Solution

The fourth proportional to 432,826.80, 649,240.20 and 255,418.80 is: 383,128.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,826.80 : 649,240.20 = 255,418.80 : x
  2. Step 2: Convert to fraction form
    432,826.80/649,240.20 = 255,418.80/x
  3. Step 3: Cross multiply
    432,826.80x = 649,240.20 × 255,418.80
  4. Step 4: Simplify right side
    432,826.80x = 165,828,152,795.76
  5. Step 5: Solve for x
    x = 165,828,152,795.76/432,826.80
  6. Step 6: Final answer
    x = 383,128.20

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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.