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Finding the Fourth Proportional to 281,671.68, 420,323.66 and 251,760

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Solution

The fourth proportional to 281,671.68, 420,323.66 and 251,760 is: 375,688.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,671.68 : 420,323.66 = 251,760 : x
  2. Step 2: Convert to fraction form
    281,671.68/420,323.66 = 251,760/x
  3. Step 3: Cross multiply
    281,671.68x = 420,323.66 × 251,760
  4. Step 4: Simplify right side
    281,671.68x = 105,820,684,641.60
  5. Step 5: Solve for x
    x = 105,820,684,641.60/281,671.68
  6. Step 6: Final answer
    x = 375,688.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.