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Finding the Fourth Proportional to 303,605.90, 455,700.45 and 154,015.10

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Solution

The fourth proportional to 303,605.90, 455,700.45 and 154,015.10 is: 231,170.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,605.90 : 455,700.45 = 154,015.10 : x
  2. Step 2: Convert to fraction form
    303,605.90/455,700.45 = 154,015.10/x
  3. Step 3: Cross multiply
    303,605.90x = 455,700.45 × 154,015.10
  4. Step 4: Simplify right side
    303,605.90x = 70,184,750,376.80
  5. Step 5: Solve for x
    x = 70,184,750,376.80/303,605.90
  6. Step 6: Final answer
    x = 231,170.57

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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.