Home / 432,199.10-648,185.68-128,511.47

Finding the Fourth Proportional to 432,199.10, 648,185.68 and 128,511.47

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Solution

The fourth proportional to 432,199.10, 648,185.68 and 128,511.47 is: 192,733.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,199.10 : 648,185.68 = 128,511.47 : x
  2. Step 2: Convert to fraction form
    432,199.10/648,185.68 = 128,511.47/x
  3. Step 3: Cross multiply
    432,199.10x = 648,185.68 × 128,511.47
  4. Step 4: Simplify right side
    432,199.10x = 83,299,291,007.54
  5. Step 5: Solve for x
    x = 83,299,291,007.54/432,199.10
  6. Step 6: Final answer
    x = 192,733.61

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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.