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Finding the Fourth Proportional to 303,680.60, 419,130.50 and 176,430

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Solution

The fourth proportional to 303,680.60, 419,130.50 and 176,430 is: 243,503.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,680.60 : 419,130.50 = 176,430 : x
  2. Step 2: Convert to fraction form
    303,680.60/419,130.50 = 176,430/x
  3. Step 3: Cross multiply
    303,680.60x = 419,130.50 × 176,430
  4. Step 4: Simplify right side
    303,680.60x = 73,947,194,115
  5. Step 5: Solve for x
    x = 73,947,194,115/303,680.60
  6. Step 6: Final answer
    x = 243,503.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.