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Finding the Fourth Proportional to 372,396, 513,902.16 and 202,627.20

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Solution

The fourth proportional to 372,396, 513,902.16 and 202,627.20 is: 279,623.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,396 : 513,902.16 = 202,627.20 : x
  2. Step 2: Convert to fraction form
    372,396/513,902.16 = 202,627.20/x
  3. Step 3: Cross multiply
    372,396x = 513,902.16 × 202,627.20
  4. Step 4: Simplify right side
    372,396x = 104,130,555,754.75
  5. Step 5: Solve for x
    x = 104,130,555,754.75/372,396
  6. Step 6: Final answer
    x = 279,623.19

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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.