Home / 274,500.03-378,818.05-153,638.21

Finding the Fourth Proportional to 274,500.03, 378,818.05 and 153,638.21

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Solution

The fourth proportional to 274,500.03, 378,818.05 and 153,638.21 is: 212,025.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,500.03 : 378,818.05 = 153,638.21 : x
  2. Step 2: Convert to fraction form
    274,500.03/378,818.05 = 153,638.21/x
  3. Step 3: Cross multiply
    274,500.03x = 378,818.05 × 153,638.21
  4. Step 4: Simplify right side
    274,500.03x = 58,200,927,117.69
  5. Step 5: Solve for x
    x = 58,200,927,117.69/274,500.03
  6. Step 6: Final answer
    x = 212,025.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.