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Finding the Fourth Proportional to 438,039.87, 604,624.29 and 256,791.03

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Solution

The fourth proportional to 438,039.87, 604,624.29 and 256,791.03 is: 354,447.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,039.87 : 604,624.29 = 256,791.03 : x
  2. Step 2: Convert to fraction form
    438,039.87/604,624.29 = 256,791.03/x
  3. Step 3: Cross multiply
    438,039.87x = 604,624.29 × 256,791.03
  4. Step 4: Simplify right side
    438,039.87x = 155,262,094,192.12
  5. Step 5: Solve for x
    x = 155,262,094,192.12/438,039.87
  6. Step 6: Final answer
    x = 354,447.40

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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.