Home / 426,339.72-639,359.46-141,953.04

Finding the Fourth Proportional to 426,339.72, 639,359.46 and 141,953.04

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Solution

The fourth proportional to 426,339.72, 639,359.46 and 141,953.04 is: 212,879.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,339.72 : 639,359.46 = 141,953.04 : x
  2. Step 2: Convert to fraction form
    426,339.72/639,359.46 = 141,953.04/x
  3. Step 3: Cross multiply
    426,339.72x = 639,359.46 × 141,953.04
  4. Step 4: Simplify right side
    426,339.72x = 90,759,018,999.76
  5. Step 5: Solve for x
    x = 90,759,018,999.76/426,339.72
  6. Step 6: Final answer
    x = 212,879.58

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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.