Home / 385,512.92-531,960.85-213,417.89

Finding the Fourth Proportional to 385,512.92, 531,960.85 and 213,417.89

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Solution

The fourth proportional to 385,512.92, 531,960.85 and 213,417.89 is: 294,490.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,512.92 : 531,960.85 = 213,417.89 : x
  2. Step 2: Convert to fraction form
    385,512.92/531,960.85 = 213,417.89/x
  3. Step 3: Cross multiply
    385,512.92x = 531,960.85 × 213,417.89
  4. Step 4: Simplify right side
    385,512.92x = 113,529,962,169.61
  5. Step 5: Solve for x
    x = 113,529,962,169.61/385,512.92
  6. Step 6: Final answer
    x = 294,490.68

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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.