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Finding the Fourth Proportional to 380,858.25, 525,601.53 and 217,528.95

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Solution

The fourth proportional to 380,858.25, 525,601.53 and 217,528.95 is: 300,199.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,858.25 : 525,601.53 = 217,528.95 : x
  2. Step 2: Convert to fraction form
    380,858.25/525,601.53 = 217,528.95/x
  3. Step 3: Cross multiply
    380,858.25x = 525,601.53 × 217,528.95
  4. Step 4: Simplify right side
    380,858.25x = 114,333,548,939.29
  5. Step 5: Solve for x
    x = 114,333,548,939.29/380,858.25
  6. Step 6: Final answer
    x = 300,199.74

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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.