Home / 309,973,924-427,678,893.84-215,782,510.24

Finding the Fourth Proportional to 309,973,924, 427,678,893.84 and 215,782,510.24

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Solution

The fourth proportional to 309,973,924, 427,678,893.84 and 215,782,510.24 is: 297,720,608.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,973,924 : 427,678,893.84 = 215,782,510.24 : x
  2. Step 2: Convert to fraction form
    309,973,924/427,678,893.84 = 215,782,510.24/x
  3. Step 3: Cross multiply
    309,973,924x = 427,678,893.84 × 215,782,510.24
  4. Step 4: Simplify right side
    309,973,924x = 92,285,625,289,461,664
  5. Step 5: Solve for x
    x = 92,285,625,289,461,664/309,973,924
  6. Step 6: Final answer
    x = 297,720,608.56

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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.