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Finding the Fourth Proportional to 612,401.70, 918,165.15 and 275,166.30

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Solution

The fourth proportional to 612,401.70, 918,165.15 and 275,166.30 is: 412,552.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,401.70 : 918,165.15 = 275,166.30 : x
  2. Step 2: Convert to fraction form
    612,401.70/918,165.15 = 275,166.30/x
  3. Step 3: Cross multiply
    612,401.70x = 918,165.15 × 275,166.30
  4. Step 4: Simplify right side
    612,401.70x = 252,648,107,114.45
  5. Step 5: Solve for x
    x = 252,648,107,114.45/612,401.70
  6. Step 6: Final answer
    x = 412,552.92

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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.