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Finding the Fourth Proportional to 330,290.83, 455,786.11 and 187,051.91

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Solution

The fourth proportional to 330,290.83, 455,786.11 and 187,051.91 is: 258,123.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,290.83 : 455,786.11 = 187,051.91 : x
  2. Step 2: Convert to fraction form
    330,290.83/455,786.11 = 187,051.91/x
  3. Step 3: Cross multiply
    330,290.83x = 455,786.11 × 187,051.91
  4. Step 4: Simplify right side
    330,290.83x = 85,255,661,491.71
  5. Step 5: Solve for x
    x = 85,255,661,491.71/330,290.83
  6. Step 6: Final answer
    x = 258,123.01

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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.