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Finding the Fourth Proportional to 250,430.67, 375,669.21 and 90,546.60

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Solution

The fourth proportional to 250,430.67, 375,669.21 and 90,546.60 is: 135,828.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,430.67 : 375,669.21 = 90,546.60 : x
  2. Step 2: Convert to fraction form
    250,430.67/375,669.21 = 90,546.60/x
  3. Step 3: Cross multiply
    250,430.67x = 375,669.21 × 90,546.60
  4. Step 4: Simplify right side
    250,430.67x = 34,015,569,690.19
  5. Step 5: Solve for x
    x = 34,015,569,690.19/250,430.67
  6. Step 6: Final answer
    x = 135,828.29

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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.