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Finding the Fourth Proportional to 330,274.87, 455,807.43 and 187,060.39

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Solution

The fourth proportional to 330,274.87, 455,807.43 and 187,060.39 is: 258,159.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,274.87 : 455,807.43 = 187,060.39 : x
  2. Step 2: Convert to fraction form
    330,274.87/455,807.43 = 187,060.39/x
  3. Step 3: Cross multiply
    330,274.87x = 455,807.43 × 187,060.39
  4. Step 4: Simplify right side
    330,274.87x = 85,263,512,406.36
  5. Step 5: Solve for x
    x = 85,263,512,406.36/330,274.87
  6. Step 6: Final answer
    x = 258,159.25

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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.