Home / 383,521,920.12-529,260,021.18-207,309,918.42

Finding the Fourth Proportional to 383,521,920.12, 529,260,021.18 and 207,309,918.42

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Solution

The fourth proportional to 383,521,920.12, 529,260,021.18 and 207,309,918.42 is: 286,087,563.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,521,920.12 : 529,260,021.18 = 207,309,918.42 : x
  2. Step 2: Convert to fraction form
    383,521,920.12/529,260,021.18 = 207,309,918.42/x
  3. Step 3: Cross multiply
    383,521,920.12x = 529,260,021.18 × 207,309,918.42
  4. Step 4: Simplify right side
    383,521,920.12x = 109,720,851,813,793,264
  5. Step 5: Solve for x
    x = 109,720,851,813,793,264/383,521,920.12
  6. Step 6: Final answer
    x = 286,087,563.86

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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.