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Finding the Fourth Proportional to 438,326.60, 604,991.43 and 257,096.93

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Solution

The fourth proportional to 438,326.60, 604,991.43 and 257,096.93 is: 354,852.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,326.60 : 604,991.43 = 257,096.93 : x
  2. Step 2: Convert to fraction form
    438,326.60/604,991.43 = 257,096.93/x
  3. Step 3: Cross multiply
    438,326.60x = 604,991.43 × 257,096.93
  4. Step 4: Simplify right side
    438,326.60x = 155,541,436,304.35
  5. Step 5: Solve for x
    x = 155,541,436,304.35/438,326.60
  6. Step 6: Final answer
    x = 354,852.84

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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.