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Finding the Fourth Proportional to 303,415.10, 455,013.30 and 153,605.60

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Solution

The fourth proportional to 303,415.10, 455,013.30 and 153,605.60 is: 230,353.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,415.10 : 455,013.30 = 153,605.60 : x
  2. Step 2: Convert to fraction form
    303,415.10/455,013.30 = 153,605.60/x
  3. Step 3: Cross multiply
    303,415.10x = 455,013.30 × 153,605.60
  4. Step 4: Simplify right side
    303,415.10x = 69,892,590,954.48
  5. Step 5: Solve for x
    x = 69,892,590,954.48/303,415.10
  6. Step 6: Final answer
    x = 230,353.04

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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.