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Finding the Fourth Proportional to 525,157.28, 724,713.36 and 286,693.28

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Solution

The fourth proportional to 525,157.28, 724,713.36 and 286,693.28 is: 395,634.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,157.28 : 724,713.36 = 286,693.28 : x
  2. Step 2: Convert to fraction form
    525,157.28/724,713.36 = 286,693.28/x
  3. Step 3: Cross multiply
    525,157.28x = 724,713.36 × 286,693.28
  4. Step 4: Simplify right side
    525,157.28x = 207,770,450,238.22
  5. Step 5: Solve for x
    x = 207,770,450,238.22/525,157.28
  6. Step 6: Final answer
    x = 395,634.71

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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.