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Finding the Fourth Proportional to 462,481.51, 638,327.37 and 281,155

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Solution

The fourth proportional to 462,481.51, 638,327.37 and 281,155 is: 388,056.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,481.51 : 638,327.37 = 281,155 : x
  2. Step 2: Convert to fraction form
    462,481.51/638,327.37 = 281,155/x
  3. Step 3: Cross multiply
    462,481.51x = 638,327.37 × 281,155
  4. Step 4: Simplify right side
    462,481.51x = 179,468,931,712.35
  5. Step 5: Solve for x
    x = 179,468,931,712.35/462,481.51
  6. Step 6: Final answer
    x = 388,056.45

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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.