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Finding the Fourth Proportional to 330,294.95, 455,791.80 and 187,056.04

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Solution

The fourth proportional to 330,294.95, 455,791.80 and 187,056.04 is: 258,128.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,294.95 : 455,791.80 = 187,056.04 : x
  2. Step 2: Convert to fraction form
    330,294.95/455,791.80 = 187,056.04/x
  3. Step 3: Cross multiply
    330,294.95x = 455,791.80 × 187,056.04
  4. Step 4: Simplify right side
    330,294.95x = 85,258,609,172.47
  5. Step 5: Solve for x
    x = 85,258,609,172.47/330,294.95
  6. Step 6: Final answer
    x = 258,128.71

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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.