Home / 384,905.70-531,155.61-215,142.66

Finding the Fourth Proportional to 384,905.70, 531,155.61 and 215,142.66

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Solution

The fourth proportional to 384,905.70, 531,155.61 and 215,142.66 is: 296,888.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,905.70 : 531,155.61 = 215,142.66 : x
  2. Step 2: Convert to fraction form
    384,905.70/531,155.61 = 215,142.66/x
  3. Step 3: Cross multiply
    384,905.70x = 531,155.61 × 215,142.66
  4. Step 4: Simplify right side
    384,905.70x = 114,274,230,809.32
  5. Step 5: Solve for x
    x = 114,274,230,809.32/384,905.70
  6. Step 6: Final answer
    x = 296,888.90

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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.