Home / 291,839.82-437,726.91-78,623.49

Finding the Fourth Proportional to 291,839.82, 437,726.91 and 78,623.49

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Solution

The fourth proportional to 291,839.82, 437,726.91 and 78,623.49 is: 117,926.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,839.82 : 437,726.91 = 78,623.49 : x
  2. Step 2: Convert to fraction form
    291,839.82/437,726.91 = 78,623.49/x
  3. Step 3: Cross multiply
    291,839.82x = 437,726.91 × 78,623.49
  4. Step 4: Simplify right side
    291,839.82x = 34,415,617,331.12
  5. Step 5: Solve for x
    x = 34,415,617,331.12/291,839.82
  6. Step 6: Final answer
    x = 117,926.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.