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Finding the Fourth Proportional to 303,463.60, 455,195.40 and 145,610.80

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Solution

The fourth proportional to 303,463.60, 455,195.40 and 145,610.80 is: 218,416.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,463.60 : 455,195.40 = 145,610.80 : x
  2. Step 2: Convert to fraction form
    303,463.60/455,195.40 = 145,610.80/x
  3. Step 3: Cross multiply
    303,463.60x = 455,195.40 × 145,610.80
  4. Step 4: Simplify right side
    303,463.60x = 66,281,366,350.32
  5. Step 5: Solve for x
    x = 66,281,366,350.32/303,463.60
  6. Step 6: Final answer
    x = 218,416.20

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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.