Home / 330,290.21-455,785.23-187,051.28

Finding the Fourth Proportional to 330,290.21, 455,785.23 and 187,051.28

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Solution

The fourth proportional to 330,290.21, 455,785.23 and 187,051.28 is: 258,122.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,290.21 : 455,785.23 = 187,051.28 : x
  2. Step 2: Convert to fraction form
    330,290.21/455,785.23 = 187,051.28/x
  3. Step 3: Cross multiply
    330,290.21x = 455,785.23 × 187,051.28
  4. Step 4: Simplify right side
    330,290.21x = 85,255,211,816.06
  5. Step 5: Solve for x
    x = 85,255,211,816.06/330,290.21
  6. Step 6: Final answer
    x = 258,122.13

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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.