Home / 385,015.56-531,312.66-215,265.48

Finding the Fourth Proportional to 385,015.56, 531,312.66 and 215,265.48

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Solution

The fourth proportional to 385,015.56, 531,312.66 and 215,265.48 is: 297,061.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,015.56 : 531,312.66 = 215,265.48 : x
  2. Step 2: Convert to fraction form
    385,015.56/531,312.66 = 215,265.48/x
  3. Step 3: Cross multiply
    385,015.56x = 531,312.66 × 215,265.48
  4. Step 4: Simplify right side
    385,015.56x = 114,373,274,784.98
  5. Step 5: Solve for x
    x = 114,373,274,784.98/385,015.56
  6. Step 6: Final answer
    x = 297,061.44

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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.