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Finding the Fourth Proportional to 303,463.10, 455,194.65 and 145,610.30

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Solution

The fourth proportional to 303,463.10, 455,194.65 and 145,610.30 is: 218,415.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,463.10 : 455,194.65 = 145,610.30 : x
  2. Step 2: Convert to fraction form
    303,463.10/455,194.65 = 145,610.30/x
  3. Step 3: Cross multiply
    303,463.10x = 455,194.65 × 145,610.30
  4. Step 4: Simplify right side
    303,463.10x = 66,281,029,544.90
  5. Step 5: Solve for x
    x = 66,281,029,544.90/303,463.10
  6. Step 6: Final answer
    x = 218,415.45

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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.