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Finding the Fourth Proportional to 279,342.85, 385,501.88 and 158,489.23

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Solution

The fourth proportional to 279,342.85, 385,501.88 and 158,489.23 is: 218,720.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,342.85 : 385,501.88 = 158,489.23 : x
  2. Step 2: Convert to fraction form
    279,342.85/385,501.88 = 158,489.23/x
  3. Step 3: Cross multiply
    279,342.85x = 385,501.88 × 158,489.23
  4. Step 4: Simplify right side
    279,342.85x = 61,097,896,124.75
  5. Step 5: Solve for x
    x = 61,097,896,124.75/279,342.85
  6. Step 6: Final answer
    x = 218,720.10

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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.