Home / 289,903,745.52-399,914,712-172,345,464.72

Finding the Fourth Proportional to 289,903,745.52, 399,914,712 and 172,345,464.72

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Solution

The fourth proportional to 289,903,745.52, 399,914,712 and 172,345,464.72 is: 237,746,106.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,903,745.52 : 399,914,712 = 172,345,464.72 : x
  2. Step 2: Convert to fraction form
    289,903,745.52/399,914,712 = 172,345,464.72/x
  3. Step 3: Cross multiply
    289,903,745.52x = 399,914,712 × 172,345,464.72
  4. Step 4: Simplify right side
    289,903,745.52x = 68,923,486,888,004,960
  5. Step 5: Solve for x
    x = 68,923,486,888,004,960/289,903,745.52
  6. Step 6: Final answer
    x = 237,746,106.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.