Home / 210,819.04-315,721.83-120,588.21

Finding the Fourth Proportional to 210,819.04, 315,721.83 and 120,588.21

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Solution

The fourth proportional to 210,819.04, 315,721.83 and 120,588.21 is: 180,592.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,819.04 : 315,721.83 = 120,588.21 : x
  2. Step 2: Convert to fraction form
    210,819.04/315,721.83 = 120,588.21/x
  3. Step 3: Cross multiply
    210,819.04x = 315,721.83 × 120,588.21
  4. Step 4: Simplify right side
    210,819.04x = 38,072,330,337.62
  5. Step 5: Solve for x
    x = 38,072,330,337.62/210,819.04
  6. Step 6: Final answer
    x = 180,592.47

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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.