Home / 323,716,915.20-485,575,372.80-105,387,830.40

Finding the Fourth Proportional to 323,716,915.20, 485,575,372.80 and 105,387,830.40

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Solution

The fourth proportional to 323,716,915.20, 485,575,372.80 and 105,387,830.40 is: 158,081,745.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,716,915.20 : 485,575,372.80 = 105,387,830.40 : x
  2. Step 2: Convert to fraction form
    323,716,915.20/485,575,372.80 = 105,387,830.40/x
  3. Step 3: Cross multiply
    323,716,915.20x = 485,575,372.80 × 105,387,830.40
  4. Step 4: Simplify right side
    323,716,915.20x = 51,173,735,035,063,176
  5. Step 5: Solve for x
    x = 51,173,735,035,063,176/323,716,915.20
  6. Step 6: Final answer
    x = 158,081,745.60

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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.