Home / 289,025,396.22-398,855,438.70-156,866,396.88

Finding the Fourth Proportional to 289,025,396.22, 398,855,438.70 and 156,866,396.88

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Solution

The fourth proportional to 289,025,396.22, 398,855,438.70 and 156,866,396.88 is: 216,475,840.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,025,396.22 : 398,855,438.70 = 156,866,396.88 : x
  2. Step 2: Convert to fraction form
    289,025,396.22/398,855,438.70 = 156,866,396.88/x
  3. Step 3: Cross multiply
    289,025,396.22x = 398,855,438.70 × 156,866,396.88
  4. Step 4: Simplify right side
    289,025,396.22x = 62,567,015,544,860,704
  5. Step 5: Solve for x
    x = 62,567,015,544,860,704/289,025,396.22
  6. Step 6: Final answer
    x = 216,475,840.40

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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.