Home / 311,851,324.10-430,354,835.52-172,622,085.86

Finding the Fourth Proportional to 311,851,324.10, 430,354,835.52 and 172,622,085.86

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Solution

The fourth proportional to 311,851,324.10, 430,354,835.52 and 172,622,085.86 is: 238,218,483.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,851,324.10 : 430,354,835.52 = 172,622,085.86 : x
  2. Step 2: Convert to fraction form
    311,851,324.10/430,354,835.52 = 172,622,085.86/x
  3. Step 3: Cross multiply
    311,851,324.10x = 430,354,835.52 × 172,622,085.86
  4. Step 4: Simplify right side
    311,851,324.10x = 74,288,749,367,399,616
  5. Step 5: Solve for x
    x = 74,288,749,367,399,616/311,851,324.10
  6. Step 6: Final answer
    x = 238,218,483.06

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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.