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Finding the Fourth Proportional to 398,814.58, 598,334.82 and 162,326.98

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Solution

The fourth proportional to 398,814.58, 598,334.82 and 162,326.98 is: 243,536.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,814.58 : 598,334.82 = 162,326.98 : x
  2. Step 2: Convert to fraction form
    398,814.58/598,334.82 = 162,326.98/x
  3. Step 3: Cross multiply
    398,814.58x = 598,334.82 × 162,326.98
  4. Step 4: Simplify right side
    398,814.58x = 97,125,884,359.44
  5. Step 5: Solve for x
    x = 97,125,884,359.44/398,814.58
  6. Step 6: Final answer
    x = 243,536.44

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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.