Home / 259,025,720.20-388,488,813.90-77,278,827.40

Finding the Fourth Proportional to 259,025,720.20, 388,488,813.90 and 77,278,827.40

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Solution

The fourth proportional to 259,025,720.20, 388,488,813.90 and 77,278,827.40 is: 115,903,393.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,025,720.20 : 388,488,813.90 = 77,278,827.40 : x
  2. Step 2: Convert to fraction form
    259,025,720.20/388,488,813.90 = 77,278,827.40/x
  3. Step 3: Cross multiply
    259,025,720.20x = 388,488,813.90 × 77,278,827.40
  4. Step 4: Simplify right side
    259,025,720.20x = 30,021,959,996,208,820
  5. Step 5: Solve for x
    x = 30,021,959,996,208,820/259,025,720.20
  6. Step 6: Final answer
    x = 115,903,393.58

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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.