Home / 278,837,155.52-384,793,146.12-153,386,650.15

Finding the Fourth Proportional to 278,837,155.52, 384,793,146.12 and 153,386,650.15

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Solution

The fourth proportional to 278,837,155.52, 384,793,146.12 and 153,386,650.15 is: 211,672,406.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,837,155.52 : 384,793,146.12 = 153,386,650.15 : x
  2. Step 2: Convert to fraction form
    278,837,155.52/384,793,146.12 = 153,386,650.15/x
  3. Step 3: Cross multiply
    278,837,155.52x = 384,793,146.12 × 153,386,650.15
  4. Step 4: Simplify right side
    278,837,155.52x = 59,022,131,682,778,992
  5. Step 5: Solve for x
    x = 59,022,131,682,778,992/278,837,155.52
  6. Step 6: Final answer
    x = 211,672,406.33

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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.