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Finding the Fourth Proportional to 427,557.80, 590,378.50 and 274,671.88

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Solution

The fourth proportional to 427,557.80, 590,378.50 and 274,671.88 is: 379,271.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,557.80 : 590,378.50 = 274,671.88 : x
  2. Step 2: Convert to fraction form
    427,557.80/590,378.50 = 274,671.88/x
  3. Step 3: Cross multiply
    427,557.80x = 590,378.50 × 274,671.88
  4. Step 4: Simplify right side
    427,557.80x = 162,160,372,506.58
  5. Step 5: Solve for x
    x = 162,160,372,506.58/427,557.80
  6. Step 6: Final answer
    x = 379,271.23

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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.