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Finding the Fourth Proportional to 330,293.95, 455,790.42 and 187,055.04

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Solution

The fourth proportional to 330,293.95, 455,790.42 and 187,055.04 is: 258,127.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,293.95 : 455,790.42 = 187,055.04 : x
  2. Step 2: Convert to fraction form
    330,293.95/455,790.42 = 187,055.04/x
  3. Step 3: Cross multiply
    330,293.95x = 455,790.42 × 187,055.04
  4. Step 4: Simplify right side
    330,293.95x = 85,257,895,244.72
  5. Step 5: Solve for x
    x = 85,257,895,244.72/330,293.95
  6. Step 6: Final answer
    x = 258,127.33

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1.5x scale

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.