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Finding the Fourth Proportional to 525,709.09, 725,720.73 and 307,887.46

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Solution

The fourth proportional to 525,709.09, 725,720.73 and 307,887.46 is: 425,026.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,709.09 : 725,720.73 = 307,887.46 : x
  2. Step 2: Convert to fraction form
    525,709.09/725,720.73 = 307,887.46/x
  3. Step 3: Cross multiply
    525,709.09x = 725,720.73 × 307,887.46
  4. Step 4: Simplify right side
    525,709.09x = 223,440,312,229.05
  5. Step 5: Solve for x
    x = 223,440,312,229.05/525,709.09
  6. Step 6: Final answer
    x = 425,026.53

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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.