Home / 315,743.22-473,614.83-128,769.30

Finding the Fourth Proportional to 315,743.22, 473,614.83 and 128,769.30

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Solution

The fourth proportional to 315,743.22, 473,614.83 and 128,769.30 is: 193,153.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,743.22 : 473,614.83 = 128,769.30 : x
  2. Step 2: Convert to fraction form
    315,743.22/473,614.83 = 128,769.30/x
  3. Step 3: Cross multiply
    315,743.22x = 473,614.83 × 128,769.30
  4. Step 4: Simplify right side
    315,743.22x = 60,987,050,128.72
  5. Step 5: Solve for x
    x = 60,987,050,128.72/315,743.22
  6. Step 6: Final answer
    x = 193,153.95

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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.