Home / 381,975.68-572,982.95-142,036.40

Finding the Fourth Proportional to 381,975.68, 572,982.95 and 142,036.40

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Solution

The fourth proportional to 381,975.68, 572,982.95 and 142,036.40 is: 213,061.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,975.68 : 572,982.95 = 142,036.40 : x
  2. Step 2: Convert to fraction form
    381,975.68/572,982.95 = 142,036.40/x
  3. Step 3: Cross multiply
    381,975.68x = 572,982.95 × 142,036.40
  4. Step 4: Simplify right side
    381,975.68x = 81,384,432,969.56
  5. Step 5: Solve for x
    x = 81,384,432,969.56/381,975.68
  6. Step 6: Final answer
    x = 213,061.82

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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.