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Finding the Fourth Proportional to 290,624.92, 435,702.10 and 90,842.44

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Solution

The fourth proportional to 290,624.92, 435,702.10 and 90,842.44 is: 136,190.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,624.92 : 435,702.10 = 90,842.44 : x
  2. Step 2: Convert to fraction form
    290,624.92/435,702.10 = 90,842.44/x
  3. Step 3: Cross multiply
    290,624.92x = 435,702.10 × 90,842.44
  4. Step 4: Simplify right side
    290,624.92x = 39,580,241,877.12
  5. Step 5: Solve for x
    x = 39,580,241,877.12/290,624.92
  6. Step 6: Final answer
    x = 136,190.12

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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.