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Finding the Fourth Proportional to 303,772.20, 455,658.30 and 286,276.20

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Solution

The fourth proportional to 303,772.20, 455,658.30 and 286,276.20 is: 429,414.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,772.20 : 455,658.30 = 286,276.20 : x
  2. Step 2: Convert to fraction form
    303,772.20/455,658.30 = 286,276.20/x
  3. Step 3: Cross multiply
    303,772.20x = 455,658.30 × 286,276.20
  4. Step 4: Simplify right side
    303,772.20x = 130,444,126,622.46
  5. Step 5: Solve for x
    x = 130,444,126,622.46/303,772.20
  6. Step 6: Final answer
    x = 429,414.30

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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.