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Finding the Fourth Proportional to 354,387.03, 531,278.93 and 154,558.41

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Solution

The fourth proportional to 354,387.03, 531,278.93 and 154,558.41 is: 231,706.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,387.03 : 531,278.93 = 154,558.41 : x
  2. Step 2: Convert to fraction form
    354,387.03/531,278.93 = 154,558.41/x
  3. Step 3: Cross multiply
    354,387.03x = 531,278.93 × 154,558.41
  4. Step 4: Simplify right side
    354,387.03x = 82,113,625,914.51
  5. Step 5: Solve for x
    x = 82,113,625,914.51/354,387.03
  6. Step 6: Final answer
    x = 231,706.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.