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Finding the Fourth Proportional to 274,243.72, 378,457.22 and 153,387.08

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Solution

The fourth proportional to 274,243.72, 378,457.22 and 153,387.08 is: 211,674.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,243.72 : 378,457.22 = 153,387.08 : x
  2. Step 2: Convert to fraction form
    274,243.72/378,457.22 = 153,387.08/x
  3. Step 3: Cross multiply
    274,243.72x = 378,457.22 × 153,387.08
  4. Step 4: Simplify right side
    274,243.72x = 58,050,447,880.72
  5. Step 5: Solve for x
    x = 58,050,447,880.72/274,243.72
  6. Step 6: Final answer
    x = 211,674.67

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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.