Home / 382,100.40-572,786.10-142,150.05

Finding the Fourth Proportional to 382,100.40, 572,786.10 and 142,150.05

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Solution

The fourth proportional to 382,100.40, 572,786.10 and 142,150.05 is: 213,089.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,100.40 : 572,786.10 = 142,150.05 : x
  2. Step 2: Convert to fraction form
    382,100.40/572,786.10 = 142,150.05/x
  3. Step 3: Cross multiply
    382,100.40x = 572,786.10 × 142,150.05
  4. Step 4: Simplify right side
    382,100.40x = 81,421,572,754.31
  5. Step 5: Solve for x
    x = 81,421,572,754.31/382,100.40
  6. Step 6: Final answer
    x = 213,089.47

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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.