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Finding the Fourth Proportional to 546,938.20, 820,401.90 and 172,961.20

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Solution

The fourth proportional to 546,938.20, 820,401.90 and 172,961.20 is: 259,440.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,938.20 : 820,401.90 = 172,961.20 : x
  2. Step 2: Convert to fraction form
    546,938.20/820,401.90 = 172,961.20/x
  3. Step 3: Cross multiply
    546,938.20x = 820,401.90 × 172,961.20
  4. Step 4: Simplify right side
    546,938.20x = 141,897,697,106.28
  5. Step 5: Solve for x
    x = 141,897,697,106.28/546,938.20
  6. Step 6: Final answer
    x = 259,440.09

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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.