Home / 343,861,215.20-515,791,822.80-312,116,472.80

Finding the Fourth Proportional to 343,861,215.20, 515,791,822.80 and 312,116,472.80

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Solution

The fourth proportional to 343,861,215.20, 515,791,822.80 and 312,116,472.80 is: 468,174,709.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,861,215.20 : 515,791,822.80 = 312,116,472.80 : x
  2. Step 2: Convert to fraction form
    343,861,215.20/515,791,822.80 = 312,116,472.80/x
  3. Step 3: Cross multiply
    343,861,215.20x = 515,791,822.80 × 312,116,472.80
  4. Step 4: Simplify right side
    343,861,215.20x = 160,987,124,431,418,624
  5. Step 5: Solve for x
    x = 160,987,124,431,418,624/343,861,215.20
  6. Step 6: Final answer
    x = 468,174,709.20

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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.