Home / 212,893,961.32-319,394,878.82-65,349,001.60

Finding the Fourth Proportional to 212,893,961.32, 319,394,878.82 and 65,349,001.60

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Solution

The fourth proportional to 212,893,961.32, 319,394,878.82 and 65,349,001.60 is: 98,040,058.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,893,961.32 : 319,394,878.82 = 65,349,001.60 : x
  2. Step 2: Convert to fraction form
    212,893,961.32/319,394,878.82 = 65,349,001.60/x
  3. Step 3: Cross multiply
    212,893,961.32x = 319,394,878.82 × 65,349,001.60
  4. Step 4: Simplify right side
    212,893,961.32x = 20,872,136,447,039,988
  5. Step 5: Solve for x
    x = 20,872,136,447,039,988/212,893,961.32
  6. Step 6: Final answer
    x = 98,040,058.62

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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.