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Finding the Fourth Proportional to 290,133.60, 435,211.34 and 79,787.94

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Solution

The fourth proportional to 290,133.60, 435,211.34 and 79,787.94 is: 119,684.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,133.60 : 435,211.34 = 79,787.94 : x
  2. Step 2: Convert to fraction form
    290,133.60/435,211.34 = 79,787.94/x
  3. Step 3: Cross multiply
    290,133.60x = 435,211.34 × 79,787.94
  4. Step 4: Simplify right side
    290,133.60x = 34,724,615,884.30
  5. Step 5: Solve for x
    x = 34,724,615,884.30/290,133.60
  6. Step 6: Final answer
    x = 119,684.92

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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.