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Finding the Fourth Proportional to 303,520.20, 455,280.30 and 214,873.80

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Solution

The fourth proportional to 303,520.20, 455,280.30 and 214,873.80 is: 322,310.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,520.20 : 455,280.30 = 214,873.80 : x
  2. Step 2: Convert to fraction form
    303,520.20/455,280.30 = 214,873.80/x
  3. Step 3: Cross multiply
    303,520.20x = 455,280.30 × 214,873.80
  4. Step 4: Simplify right side
    303,520.20x = 97,827,808,126.14
  5. Step 5: Solve for x
    x = 97,827,808,126.14/303,520.20
  6. Step 6: Final answer
    x = 322,310.70

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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.