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Finding the Fourth Proportional to 421,250.78, 581,366.75 and 249,224.04

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Solution

The fourth proportional to 421,250.78, 581,366.75 and 249,224.04 is: 343,953.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,250.78 : 581,366.75 = 249,224.04 : x
  2. Step 2: Convert to fraction form
    421,250.78/581,366.75 = 249,224.04/x
  3. Step 3: Cross multiply
    421,250.78x = 581,366.75 × 249,224.04
  4. Step 4: Simplify right side
    421,250.78x = 144,890,568,910.55
  5. Step 5: Solve for x
    x = 144,890,568,910.55/421,250.78
  6. Step 6: Final answer
    x = 343,953.23

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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.