Home / 354,931,670.88-489,796,665.41-198,299,955.60

Finding the Fourth Proportional to 354,931,670.88, 489,796,665.41 and 198,299,955.60

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Solution

The fourth proportional to 354,931,670.88, 489,796,665.41 and 198,299,955.60 is: 273,648,887.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,931,670.88 : 489,796,665.41 = 198,299,955.60 : x
  2. Step 2: Convert to fraction form
    354,931,670.88/489,796,665.41 = 198,299,955.60/x
  3. Step 3: Cross multiply
    354,931,670.88x = 489,796,665.41 × 198,299,955.60
  4. Step 4: Simplify right side
    354,931,670.88x = 97,126,657,004,326,800
  5. Step 5: Solve for x
    x = 97,126,657,004,326,800/354,931,670.88
  6. Step 6: Final answer
    x = 273,648,887.86

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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.