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Finding the Fourth Proportional to 468,639.88, 646,723.38 and 253,780.18

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Solution

The fourth proportional to 468,639.88, 646,723.38 and 253,780.18 is: 350,216.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,639.88 : 646,723.38 = 253,780.18 : x
  2. Step 2: Convert to fraction form
    468,639.88/646,723.38 = 253,780.18/x
  3. Step 3: Cross multiply
    468,639.88x = 646,723.38 × 253,780.18
  4. Step 4: Simplify right side
    468,639.88x = 164,125,575,786.61
  5. Step 5: Solve for x
    x = 164,125,575,786.61/468,639.88
  6. Step 6: Final answer
    x = 350,216.84

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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.