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Finding the Fourth Proportional to 525,875.37, 725,765.68 and 305,161.28

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Solution

The fourth proportional to 525,875.37, 725,765.68 and 305,161.28 is: 421,156.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,875.37 : 725,765.68 = 305,161.28 : x
  2. Step 2: Convert to fraction form
    525,875.37/725,765.68 = 305,161.28/x
  3. Step 3: Cross multiply
    525,875.37x = 725,765.68 × 305,161.28
  4. Step 4: Simplify right side
    525,875.37x = 221,475,584,940.38
  5. Step 5: Solve for x
    x = 221,475,584,940.38/525,875.37
  6. Step 6: Final answer
    x = 421,156.03

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1.5x scale

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.