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Finding the Fourth Proportional to 438,134.82, 604,078.20 and 365,641.98

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Solution

The fourth proportional to 438,134.82, 604,078.20 and 365,641.98 is: 504,128.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,134.82 : 604,078.20 = 365,641.98 : x
  2. Step 2: Convert to fraction form
    438,134.82/604,078.20 = 365,641.98/x
  3. Step 3: Cross multiply
    438,134.82x = 604,078.20 × 365,641.98
  4. Step 4: Simplify right side
    438,134.82x = 220,876,349,122.84
  5. Step 5: Solve for x
    x = 220,876,349,122.84/438,134.82
  6. Step 6: Final answer
    x = 504,128.73

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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.