Home / 289,845.94-399,987.03-160,803.98

Finding the Fourth Proportional to 289,845.94, 399,987.03 and 160,803.98

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Solution

The fourth proportional to 289,845.94, 399,987.03 and 160,803.98 is: 221,909.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,845.94 : 399,987.03 = 160,803.98 : x
  2. Step 2: Convert to fraction form
    289,845.94/399,987.03 = 160,803.98/x
  3. Step 3: Cross multiply
    289,845.94x = 399,987.03 × 160,803.98
  4. Step 4: Simplify right side
    289,845.94x = 64,319,505,568.36
  5. Step 5: Solve for x
    x = 64,319,505,568.36/289,845.94
  6. Step 6: Final answer
    x = 221,909.29

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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.