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Finding the Fourth Proportional to 371,300.50, 556,961.70 and 90,817.75

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Solution

The fourth proportional to 371,300.50, 556,961.70 and 90,817.75 is: 136,229.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,300.50 : 556,961.70 = 90,817.75 : x
  2. Step 2: Convert to fraction form
    371,300.50/556,961.70 = 90,817.75/x
  3. Step 3: Cross multiply
    371,300.50x = 556,961.70 × 90,817.75
  4. Step 4: Simplify right side
    371,300.50x = 50,582,008,430.18
  5. Step 5: Solve for x
    x = 50,582,008,430.18/371,300.50
  6. Step 6: Final answer
    x = 136,229.30

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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.