Home / 387,815.04-581,722.56-121,576.96

Finding the Fourth Proportional to 387,815.04, 581,722.56 and 121,576.96

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Solution

The fourth proportional to 387,815.04, 581,722.56 and 121,576.96 is: 182,365.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,815.04 : 581,722.56 = 121,576.96 : x
  2. Step 2: Convert to fraction form
    387,815.04/581,722.56 = 121,576.96/x
  3. Step 3: Cross multiply
    387,815.04x = 581,722.56 × 121,576.96
  4. Step 4: Simplify right side
    387,815.04x = 70,724,060,408.22
  5. Step 5: Solve for x
    x = 70,724,060,408.22/387,815.04
  6. Step 6: Final answer
    x = 182,365.44

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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.