Home / 385,385.05-531,832.17-213,314.77

Finding the Fourth Proportional to 385,385.05, 531,832.17 and 213,314.77

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Solution

The fourth proportional to 385,385.05, 531,832.17 and 213,314.77 is: 294,374.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,385.05 : 531,832.17 = 213,314.77 : x
  2. Step 2: Convert to fraction form
    385,385.05/531,832.17 = 213,314.77/x
  3. Step 3: Cross multiply
    385,385.05x = 531,832.17 × 213,314.77
  4. Step 4: Simplify right side
    385,385.05x = 113,447,657,022.15
  5. Step 5: Solve for x
    x = 113,447,657,022.15/385,385.05
  6. Step 6: Final answer
    x = 294,374.83

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1.5x scale

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.