Home / 385,554.20-578,331.30-271,392.80

Finding the Fourth Proportional to 385,554.20, 578,331.30 and 271,392.80

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Solution

The fourth proportional to 385,554.20, 578,331.30 and 271,392.80 is: 407,089.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,554.20 : 578,331.30 = 271,392.80 : x
  2. Step 2: Convert to fraction form
    385,554.20/578,331.30 = 271,392.80/x
  3. Step 3: Cross multiply
    385,554.20x = 578,331.30 × 271,392.80
  4. Step 4: Simplify right side
    385,554.20x = 156,954,950,834.64
  5. Step 5: Solve for x
    x = 156,954,950,834.64/385,554.20
  6. Step 6: Final answer
    x = 407,089.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.