Home / 372,727.44-513,783-312,191.28

Finding the Fourth Proportional to 372,727.44, 513,783 and 312,191.28

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Solution

The fourth proportional to 372,727.44, 513,783 and 312,191.28 is: 430,337.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,727.44 : 513,783 = 312,191.28 : x
  2. Step 2: Convert to fraction form
    372,727.44/513,783 = 312,191.28/x
  3. Step 3: Cross multiply
    372,727.44x = 513,783 × 312,191.28
  4. Step 4: Simplify right side
    372,727.44x = 160,398,572,412.24
  5. Step 5: Solve for x
    x = 160,398,572,412.24/372,727.44
  6. Step 6: Final answer
    x = 430,337.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.