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Finding the Fourth Proportional to 421,627.26, 581,859.41 and 240,335.90

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Solution

The fourth proportional to 421,627.26, 581,859.41 and 240,335.90 is: 331,671.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,627.26 : 581,859.41 = 240,335.90 : x
  2. Step 2: Convert to fraction form
    421,627.26/581,859.41 = 240,335.90/x
  3. Step 3: Cross multiply
    421,627.26x = 581,859.41 × 240,335.90
  4. Step 4: Simplify right side
    421,627.26x = 139,841,704,975.82
  5. Step 5: Solve for x
    x = 139,841,704,975.82/421,627.26
  6. Step 6: Final answer
    x = 331,671.40

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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.