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Finding the Fourth Proportional to 321,000.40, 482,537.40 and 228,149.20

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Solution

The fourth proportional to 321,000.40, 482,537.40 and 228,149.20 is: 342,960.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,000.40 : 482,537.40 = 228,149.20 : x
  2. Step 2: Convert to fraction form
    321,000.40/482,537.40 = 228,149.20/x
  3. Step 3: Cross multiply
    321,000.40x = 482,537.40 × 228,149.20
  4. Step 4: Simplify right side
    321,000.40x = 110,090,521,780.08
  5. Step 5: Solve for x
    x = 110,090,521,780.08/321,000.40
  6. Step 6: Final answer
    x = 342,960.70

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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.