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Finding the Fourth Proportional to 290,751.80, 435,836.10 and 133,093.40

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Solution

The fourth proportional to 290,751.80, 435,836.10 and 133,093.40 is: 199,506.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,751.80 : 435,836.10 = 133,093.40 : x
  2. Step 2: Convert to fraction form
    290,751.80/435,836.10 = 133,093.40/x
  3. Step 3: Cross multiply
    290,751.80x = 435,836.10 × 133,093.40
  4. Step 4: Simplify right side
    290,751.80x = 58,006,908,391.74
  5. Step 5: Solve for x
    x = 58,006,908,391.74/290,751.80
  6. Step 6: Final answer
    x = 199,506.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.