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Finding the Fourth Proportional to 380,672.43, 525,307.83 and 217,322.46

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Solution

The fourth proportional to 380,672.43, 525,307.83 and 217,322.46 is: 299,893.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,672.43 : 525,307.83 = 217,322.46 : x
  2. Step 2: Convert to fraction form
    380,672.43/525,307.83 = 217,322.46/x
  3. Step 3: Cross multiply
    380,672.43x = 525,307.83 × 217,322.46
  4. Step 4: Simplify right side
    380,672.43x = 114,161,190,280.34
  5. Step 5: Solve for x
    x = 114,161,190,280.34/380,672.43
  6. Step 6: Final answer
    x = 299,893.51

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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.