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Finding the Fourth Proportional to 378,174.19, 521,715.04 and 270,705.01

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Solution

The fourth proportional to 378,174.19, 521,715.04 and 270,705.01 is: 373,454.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,174.19 : 521,715.04 = 270,705.01 : x
  2. Step 2: Convert to fraction form
    378,174.19/521,715.04 = 270,705.01/x
  3. Step 3: Cross multiply
    378,174.19x = 521,715.04 × 270,705.01
  4. Step 4: Simplify right side
    378,174.19x = 141,230,875,120.35
  5. Step 5: Solve for x
    x = 141,230,875,120.35/378,174.19
  6. Step 6: Final answer
    x = 373,454.56

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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.