Home / 384,981.64-531,278.03-212,890.66

Finding the Fourth Proportional to 384,981.64, 531,278.03 and 212,890.66

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Solution

The fourth proportional to 384,981.64, 531,278.03 and 212,890.66 is: 293,790.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,981.64 : 531,278.03 = 212,890.66 : x
  2. Step 2: Convert to fraction form
    384,981.64/531,278.03 = 212,890.66/x
  3. Step 3: Cross multiply
    384,981.64x = 531,278.03 × 212,890.66
  4. Step 4: Simplify right side
    384,981.64x = 113,104,128,057.55
  5. Step 5: Solve for x
    x = 113,104,128,057.55/384,981.64
  6. Step 6: Final answer
    x = 293,790.97

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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.