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Finding the Fourth Proportional to 290,875.64, 436,323 and 80,495.96

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Solution

The fourth proportional to 290,875.64, 436,323 and 80,495.96 is: 120,746.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,875.64 : 436,323 = 80,495.96 : x
  2. Step 2: Convert to fraction form
    290,875.64/436,323 = 80,495.96/x
  3. Step 3: Cross multiply
    290,875.64x = 436,323 × 80,495.96
  4. Step 4: Simplify right side
    290,875.64x = 35,122,238,755.08
  5. Step 5: Solve for x
    x = 35,122,238,755.08/290,875.64
  6. Step 6: Final answer
    x = 120,746.58

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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.