Home / 215,607,719.20-323,411,578.80-79,264,890.40

Finding the Fourth Proportional to 215,607,719.20, 323,411,578.80 and 79,264,890.40

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Solution

The fourth proportional to 215,607,719.20, 323,411,578.80 and 79,264,890.40 is: 118,897,335.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,607,719.20 : 323,411,578.80 = 79,264,890.40 : x
  2. Step 2: Convert to fraction form
    215,607,719.20/323,411,578.80 = 79,264,890.40/x
  3. Step 3: Cross multiply
    215,607,719.20x = 323,411,578.80 × 79,264,890.40
  4. Step 4: Simplify right side
    215,607,719.20x = 25,635,183,347,672,968
  5. Step 5: Solve for x
    x = 25,635,183,347,672,968/215,607,719.20
  6. Step 6: Final answer
    x = 118,897,335.60

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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.