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Finding the Fourth Proportional to 517,556, 776,334.36 and 143,579.36

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Solution

The fourth proportional to 517,556, 776,334.36 and 143,579.36 is: 215,369.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,556 : 776,334.36 = 143,579.36 : x
  2. Step 2: Convert to fraction form
    517,556/776,334.36 = 143,579.36/x
  3. Step 3: Cross multiply
    517,556x = 776,334.36 × 143,579.36
  4. Step 4: Simplify right side
    517,556x = 111,465,590,554.81
  5. Step 5: Solve for x
    x = 111,465,590,554.81/517,556
  6. Step 6: Final answer
    x = 215,369.14

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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.