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Finding the Fourth Proportional to 303,337.40, 455,006.10 and 280,527.80

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Solution

The fourth proportional to 303,337.40, 455,006.10 and 280,527.80 is: 420,791.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,337.40 : 455,006.10 = 280,527.80 : x
  2. Step 2: Convert to fraction form
    303,337.40/455,006.10 = 280,527.80/x
  3. Step 3: Cross multiply
    303,337.40x = 455,006.10 × 280,527.80
  4. Step 4: Simplify right side
    303,337.40x = 127,641,860,219.58
  5. Step 5: Solve for x
    x = 127,641,860,219.58/303,337.40
  6. Step 6: Final answer
    x = 420,791.70

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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.