Home / 330,288.40-455,808.66-187,045.36

Finding the Fourth Proportional to 330,288.40, 455,808.66 and 187,045.36

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Solution

The fourth proportional to 330,288.40, 455,808.66 and 187,045.36 is: 258,128.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,288.40 : 455,808.66 = 187,045.36 : x
  2. Step 2: Convert to fraction form
    330,288.40/455,808.66 = 187,045.36/x
  3. Step 3: Cross multiply
    330,288.40x = 455,808.66 × 187,045.36
  4. Step 4: Simplify right side
    330,288.40x = 85,256,894,900.82
  5. Step 5: Solve for x
    x = 85,256,894,900.82/330,288.40
  6. Step 6: Final answer
    x = 258,128.64

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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.