Home / 274,235.22-378,445.47-153,378.56

Finding the Fourth Proportional to 274,235.22, 378,445.47 and 153,378.56

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Solution

The fourth proportional to 274,235.22, 378,445.47 and 153,378.56 is: 211,662.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,235.22 : 378,445.47 = 153,378.56 : x
  2. Step 2: Convert to fraction form
    274,235.22/378,445.47 = 153,378.56/x
  3. Step 3: Cross multiply
    274,235.22x = 378,445.47 × 153,378.56
  4. Step 4: Simplify right side
    274,235.22x = 58,045,421,598.07
  5. Step 5: Solve for x
    x = 58,045,421,598.07/274,235.22
  6. Step 6: Final answer
    x = 211,662.90

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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.