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Finding the Fourth Proportional to 508,254.72, 701,380.80 and 281,895.36

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Solution

The fourth proportional to 508,254.72, 701,380.80 and 281,895.36 is: 389,009.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,254.72 : 701,380.80 = 281,895.36 : x
  2. Step 2: Convert to fraction form
    508,254.72/701,380.80 = 281,895.36/x
  3. Step 3: Cross multiply
    508,254.72x = 701,380.80 × 281,895.36
  4. Step 4: Simplify right side
    508,254.72x = 197,715,993,113.09
  5. Step 5: Solve for x
    x = 197,715,993,113.09/508,254.72
  6. Step 6: Final answer
    x = 389,009.65

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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.