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Finding the Fourth Proportional to 438,602.86, 657,374.15 and 213,626.17

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Solution

The fourth proportional to 438,602.86, 657,374.15 and 213,626.17 is: 320,181.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,602.86 : 657,374.15 = 213,626.17 : x
  2. Step 2: Convert to fraction form
    438,602.86/657,374.15 = 213,626.17/x
  3. Step 3: Cross multiply
    438,602.86x = 657,374.15 × 213,626.17
  4. Step 4: Simplify right side
    438,602.86x = 140,432,321,921.51
  5. Step 5: Solve for x
    x = 140,432,321,921.51/438,602.86
  6. Step 6: Final answer
    x = 320,181.04

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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.