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Finding the Fourth Proportional to 385,336.72, 531,752.65 and 213,244.32

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Solution

The fourth proportional to 385,336.72, 531,752.65 and 213,244.32 is: 294,270.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,336.72 : 531,752.65 = 213,244.32 : x
  2. Step 2: Convert to fraction form
    385,336.72/531,752.65 = 213,244.32/x
  3. Step 3: Cross multiply
    385,336.72x = 531,752.65 × 213,244.32
  4. Step 4: Simplify right side
    385,336.72x = 113,393,232,257.45
  5. Step 5: Solve for x
    x = 113,393,232,257.45/385,336.72
  6. Step 6: Final answer
    x = 294,270.51

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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.