Home / 311,972,392.50-430,516,639.19-172,740,164.91

Finding the Fourth Proportional to 311,972,392.50, 430,516,639.19 and 172,740,164.91

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Solution

The fourth proportional to 311,972,392.50, 430,516,639.19 and 172,740,164.91 is: 238,378,513.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,972,392.50 : 430,516,639.19 = 172,740,164.91 : x
  2. Step 2: Convert to fraction form
    311,972,392.50/430,516,639.19 = 172,740,164.91/x
  3. Step 3: Cross multiply
    311,972,392.50x = 430,516,639.19 × 172,740,164.91
  4. Step 4: Simplify right side
    311,972,392.50x = 74,367,515,249,315,872
  5. Step 5: Solve for x
    x = 74,367,515,249,315,872/311,972,392.50
  6. Step 6: Final answer
    x = 238,378,513.73

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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.