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Finding the Fourth Proportional to 372,000.72, 513,401.16 and 210,838.48

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Solution

The fourth proportional to 372,000.72, 513,401.16 and 210,838.48 is: 290,979.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,000.72 : 513,401.16 = 210,838.48 : x
  2. Step 2: Convert to fraction form
    372,000.72/513,401.16 = 210,838.48/x
  3. Step 3: Cross multiply
    372,000.72x = 513,401.16 × 210,838.48
  4. Step 4: Simplify right side
    372,000.72x = 108,244,720,204.64
  5. Step 5: Solve for x
    x = 108,244,720,204.64/372,000.72
  6. Step 6: Final answer
    x = 290,979.87

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1.5x scale

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.