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Finding the Fourth Proportional to 353,059.40, 529,718.70 and 142,718.60

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Solution

The fourth proportional to 353,059.40, 529,718.70 and 142,718.60 is: 214,130.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,059.40 : 529,718.70 = 142,718.60 : x
  2. Step 2: Convert to fraction form
    353,059.40/529,718.70 = 142,718.60/x
  3. Step 3: Cross multiply
    353,059.40x = 529,718.70 × 142,718.60
  4. Step 4: Simplify right side
    353,059.40x = 75,600,711,257.82
  5. Step 5: Solve for x
    x = 75,600,711,257.82/353,059.40
  6. Step 6: Final answer
    x = 214,130.29

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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.