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Finding the Fourth Proportional to 372,157.31, 513,566.11 and 211,027.07

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Solution

The fourth proportional to 372,157.31, 513,566.11 and 211,027.07 is: 291,211.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,157.31 : 513,566.11 = 211,027.07 : x
  2. Step 2: Convert to fraction form
    372,157.31/513,566.11 = 211,027.07/x
  3. Step 3: Cross multiply
    372,157.31x = 513,566.11 × 211,027.07
  4. Step 4: Simplify right side
    372,157.31x = 108,376,351,444.60
  5. Step 5: Solve for x
    x = 108,376,351,444.60/372,157.31
  6. Step 6: Final answer
    x = 291,211.13

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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.