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Finding the Fourth Proportional to 399,008.31, 598,783.59 and 162,394.05

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Solution

The fourth proportional to 399,008.31, 598,783.59 and 162,394.05 is: 243,701.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,008.31 : 598,783.59 = 162,394.05 : x
  2. Step 2: Convert to fraction form
    399,008.31/598,783.59 = 162,394.05/x
  3. Step 3: Cross multiply
    399,008.31x = 598,783.59 × 162,394.05
  4. Step 4: Simplify right side
    399,008.31x = 97,238,892,253.64
  5. Step 5: Solve for x
    x = 97,238,892,253.64/399,008.31
  6. Step 6: Final answer
    x = 243,701.42

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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.