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Finding the Fourth Proportional to 240,495.28, 331,881.35 and 143,693.87

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Solution

The fourth proportional to 240,495.28, 331,881.35 and 143,693.87 is: 198,296.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,495.28 : 331,881.35 = 143,693.87 : x
  2. Step 2: Convert to fraction form
    240,495.28/331,881.35 = 143,693.87/x
  3. Step 3: Cross multiply
    240,495.28x = 331,881.35 × 143,693.87
  4. Step 4: Simplify right side
    240,495.28x = 47,689,316,792.98
  5. Step 5: Solve for x
    x = 47,689,316,792.98/240,495.28
  6. Step 6: Final answer
    x = 198,296.27

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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.