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Finding the Fourth Proportional to 274,703.20, 412,054.80 and 212,418.40

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Solution

The fourth proportional to 274,703.20, 412,054.80 and 212,418.40 is: 318,627.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,703.20 : 412,054.80 = 212,418.40 : x
  2. Step 2: Convert to fraction form
    274,703.20/412,054.80 = 212,418.40/x
  3. Step 3: Cross multiply
    274,703.20x = 412,054.80 × 212,418.40
  4. Step 4: Simplify right side
    274,703.20x = 87,528,021,328.32
  5. Step 5: Solve for x
    x = 87,528,021,328.32/274,703.20
  6. Step 6: Final answer
    x = 318,627.60

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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.