Home / 385,679.39-578,892.23-186,140.25

Finding the Fourth Proportional to 385,679.39, 578,892.23 and 186,140.25

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Solution

The fourth proportional to 385,679.39, 578,892.23 and 186,140.25 is: 279,390.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,679.39 : 578,892.23 = 186,140.25 : x
  2. Step 2: Convert to fraction form
    385,679.39/578,892.23 = 186,140.25/x
  3. Step 3: Cross multiply
    385,679.39x = 578,892.23 × 186,140.25
  4. Step 4: Simplify right side
    385,679.39x = 107,755,143,484.56
  5. Step 5: Solve for x
    x = 107,755,143,484.56/385,679.39
  6. Step 6: Final answer
    x = 279,390.47

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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.