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Finding the Fourth Proportional to 303,463.40, 455,195.10 and 145,999.40

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Solution

The fourth proportional to 303,463.40, 455,195.10 and 145,999.40 is: 218,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,463.40 : 455,195.10 = 145,999.40 : x
  2. Step 2: Convert to fraction form
    303,463.40/455,195.10 = 145,999.40/x
  3. Step 3: Cross multiply
    303,463.40x = 455,195.10 × 145,999.40
  4. Step 4: Simplify right side
    303,463.40x = 66,458,211,482.94
  5. Step 5: Solve for x
    x = 66,458,211,482.94/303,463.40
  6. Step 6: Final answer
    x = 218,999.10

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Similar ratio
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1.5x scale

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.