Home / 385,723.62-578,623.47-132,970.86

Finding the Fourth Proportional to 385,723.62, 578,623.47 and 132,970.86

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Solution

The fourth proportional to 385,723.62, 578,623.47 and 132,970.86 is: 199,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,723.62 : 578,623.47 = 132,970.86 : x
  2. Step 2: Convert to fraction form
    385,723.62/578,623.47 = 132,970.86/x
  3. Step 3: Cross multiply
    385,723.62x = 578,623.47 × 132,970.86
  4. Step 4: Simplify right side
    385,723.62x = 76,940,060,422.08
  5. Step 5: Solve for x
    x = 76,940,060,422.08/385,723.62
  6. Step 6: Final answer
    x = 199,469.40

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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.