Home / 253,128,215.07-379,728,707.46-78,264,885.95

Finding the Fourth Proportional to 253,128,215.07, 379,728,707.46 and 78,264,885.95

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Solution

The fourth proportional to 253,128,215.07, 379,728,707.46 and 78,264,885.95 is: 117,408,578.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,128,215.07 : 379,728,707.46 = 78,264,885.95 : x
  2. Step 2: Convert to fraction form
    253,128,215.07/379,728,707.46 = 78,264,885.95/x
  3. Step 3: Cross multiply
    253,128,215.07x = 379,728,707.46 × 78,264,885.95
  4. Step 4: Simplify right side
    253,128,215.07x = 29,719,423,979,399,168
  5. Step 5: Solve for x
    x = 29,719,423,979,399,168/253,128,215.07
  6. Step 6: Final answer
    x = 117,408,578.78

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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.