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Finding the Fourth Proportional to 525,526.80, 725,227.68 and 299,172

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Solution

The fourth proportional to 525,526.80, 725,227.68 and 299,172 is: 412,857.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,526.80 : 725,227.68 = 299,172 : x
  2. Step 2: Convert to fraction form
    525,526.80/725,227.68 = 299,172/x
  3. Step 3: Cross multiply
    525,526.80x = 725,227.68 × 299,172
  4. Step 4: Simplify right side
    525,526.80x = 216,967,815,480.96
  5. Step 5: Solve for x
    x = 216,967,815,480.96/525,526.80
  6. Step 6: Final answer
    x = 412,857.76

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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.