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Finding the Fourth Proportional to 274,242.72, 378,455.84 and 153,386.08

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Solution

The fourth proportional to 274,242.72, 378,455.84 and 153,386.08 is: 211,673.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,242.72 : 378,455.84 = 153,386.08 : x
  2. Step 2: Convert to fraction form
    274,242.72/378,455.84 = 153,386.08/x
  3. Step 3: Cross multiply
    274,242.72x = 378,455.84 × 153,386.08
  4. Step 4: Simplify right side
    274,242.72x = 58,049,857,750.71
  5. Step 5: Solve for x
    x = 58,049,857,750.71/274,242.72
  6. Step 6: Final answer
    x = 211,673.29

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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.