Home / 212,939,150.40-319,408,725.60-140,238,021.60

Finding the Fourth Proportional to 212,939,150.40, 319,408,725.60 and 140,238,021.60

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Solution

The fourth proportional to 212,939,150.40, 319,408,725.60 and 140,238,021.60 is: 210,357,032.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,939,150.40 : 319,408,725.60 = 140,238,021.60 : x
  2. Step 2: Convert to fraction form
    212,939,150.40/319,408,725.60 = 140,238,021.60/x
  3. Step 3: Cross multiply
    212,939,150.40x = 319,408,725.60 × 140,238,021.60
  4. Step 4: Simplify right side
    212,939,150.40x = 44,793,247,759,921,272
  5. Step 5: Solve for x
    x = 44,793,247,759,921,272/212,939,150.40
  6. Step 6: Final answer
    x = 210,357,032.40

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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.