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Finding the Fourth Proportional to 352,440.32, 528,764.16 and 141,969.92

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Solution

The fourth proportional to 352,440.32, 528,764.16 and 141,969.92 is: 212,996.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,440.32 : 528,764.16 = 141,969.92 : x
  2. Step 2: Convert to fraction form
    352,440.32/528,764.16 = 141,969.92/x
  3. Step 3: Cross multiply
    352,440.32x = 528,764.16 × 141,969.92
  4. Step 4: Simplify right side
    352,440.32x = 75,068,605,494.07
  5. Step 5: Solve for x
    x = 75,068,605,494.07/352,440.32
  6. Step 6: Final answer
    x = 212,996.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.