Home / 376,868.40-520,051.39-215,721.10

Finding the Fourth Proportional to 376,868.40, 520,051.39 and 215,721.10

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Solution

The fourth proportional to 376,868.40, 520,051.39 and 215,721.10 is: 297,679.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,868.40 : 520,051.39 = 215,721.10 : x
  2. Step 2: Convert to fraction form
    376,868.40/520,051.39 = 215,721.10/x
  3. Step 3: Cross multiply
    376,868.40x = 520,051.39 × 215,721.10
  4. Step 4: Simplify right side
    376,868.40x = 112,186,057,907.33
  5. Step 5: Solve for x
    x = 112,186,057,907.33/376,868.40
  6. Step 6: Final answer
    x = 297,679.66

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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.