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Finding the Fourth Proportional to 438,039.11, 604,623.26 and 256,790.27

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Solution

The fourth proportional to 438,039.11, 604,623.26 and 256,790.27 is: 354,446.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,039.11 : 604,623.26 = 256,790.27 : x
  2. Step 2: Convert to fraction form
    438,039.11/604,623.26 = 256,790.27/x
  3. Step 3: Cross multiply
    438,039.11x = 604,623.26 × 256,790.27
  4. Step 4: Simplify right side
    438,039.11x = 155,261,372,337.21
  5. Step 5: Solve for x
    x = 155,261,372,337.21/438,039.11
  6. Step 6: Final answer
    x = 354,446.37

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1.5x scale

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.