Home / 212,872,023.60-319,308,035.40-189,913,772.40

Finding the Fourth Proportional to 212,872,023.60, 319,308,035.40 and 189,913,772.40

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Solution

The fourth proportional to 212,872,023.60, 319,308,035.40 and 189,913,772.40 is: 284,870,658.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,872,023.60 : 319,308,035.40 = 189,913,772.40 : x
  2. Step 2: Convert to fraction form
    212,872,023.60/319,308,035.40 = 189,913,772.40/x
  3. Step 3: Cross multiply
    212,872,023.60x = 319,308,035.40 × 189,913,772.40
  4. Step 4: Simplify right side
    212,872,023.60x = 60,640,993,560,446,744
  5. Step 5: Solve for x
    x = 60,640,993,560,446,744/212,872,023.60
  6. Step 6: Final answer
    x = 284,870,658.60

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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.