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Finding the Fourth Proportional to 303,486.60, 455,186.70 and 103,816.20

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Solution

The fourth proportional to 303,486.60, 455,186.70 and 103,816.20 is: 155,709.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,486.60 : 455,186.70 = 103,816.20 : x
  2. Step 2: Convert to fraction form
    303,486.60/455,186.70 = 103,816.20/x
  3. Step 3: Cross multiply
    303,486.60x = 455,186.70 × 103,816.20
  4. Step 4: Simplify right side
    303,486.60x = 47,255,753,484.54
  5. Step 5: Solve for x
    x = 47,255,753,484.54/303,486.60
  6. Step 6: Final answer
    x = 155,709.52

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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.