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Finding the Fourth Proportional to 525,897.28, 725,591.28 and 354,057.40

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Solution

The fourth proportional to 525,897.28, 725,591.28 and 354,057.40 is: 488,500.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,897.28 : 725,591.28 = 354,057.40 : x
  2. Step 2: Convert to fraction form
    525,897.28/725,591.28 = 354,057.40/x
  3. Step 3: Cross multiply
    525,897.28x = 725,591.28 × 354,057.40
  4. Step 4: Simplify right side
    525,897.28x = 256,900,962,059.47
  5. Step 5: Solve for x
    x = 256,900,962,059.47/525,897.28
  6. Step 6: Final answer
    x = 488,500.27

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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.