Home / 358,419,336.10-537,685,691.20-128,383,327.78

Finding the Fourth Proportional to 358,419,336.10, 537,685,691.20 and 128,383,327.78

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Solution

The fourth proportional to 358,419,336.10, 537,685,691.20 and 128,383,327.78 is: 192,595,296.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,419,336.10 : 537,685,691.20 = 128,383,327.78 : x
  2. Step 2: Convert to fraction form
    358,419,336.10/537,685,691.20 = 128,383,327.78/x
  3. Step 3: Cross multiply
    358,419,336.10x = 537,685,691.20 × 128,383,327.78
  4. Step 4: Simplify right side
    358,419,336.10x = 69,029,878,335,945,472
  5. Step 5: Solve for x
    x = 69,029,878,335,945,472/358,419,336.10
  6. Step 6: Final answer
    x = 192,595,296.58

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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.