Home / 376,421.72-519,503.28-215,291.84

Finding the Fourth Proportional to 376,421.72, 519,503.28 and 215,291.84

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Solution

The fourth proportional to 376,421.72, 519,503.28 and 215,291.84 is: 297,126.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,421.72 : 519,503.28 = 215,291.84 : x
  2. Step 2: Convert to fraction form
    376,421.72/519,503.28 = 215,291.84/x
  3. Step 3: Cross multiply
    376,421.72x = 519,503.28 × 215,291.84
  4. Step 4: Simplify right side
    376,421.72x = 111,844,817,037.24
  5. Step 5: Solve for x
    x = 111,844,817,037.24/376,421.72
  6. Step 6: Final answer
    x = 297,126.36

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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.