Home / 259,640,138.10-389,460,207.15-77,887,316.10

Finding the Fourth Proportional to 259,640,138.10, 389,460,207.15 and 77,887,316.10

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Solution

The fourth proportional to 259,640,138.10, 389,460,207.15 and 77,887,316.10 is: 116,830,974.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,640,138.10 : 389,460,207.15 = 77,887,316.10 : x
  2. Step 2: Convert to fraction form
    259,640,138.10/389,460,207.15 = 77,887,316.10/x
  3. Step 3: Cross multiply
    259,640,138.10x = 389,460,207.15 × 77,887,316.10
  4. Step 4: Simplify right side
    259,640,138.10x = 30,334,010,262,663,524
  5. Step 5: Solve for x
    x = 30,334,010,262,663,524/259,640,138.10
  6. Step 6: Final answer
    x = 116,830,974.15

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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.