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Finding the Fourth Proportional to 353,954.79, 530,638.25 and 140,591.07

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Solution

The fourth proportional to 353,954.79, 530,638.25 and 140,591.07 is: 210,769.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,954.79 : 530,638.25 = 140,591.07 : x
  2. Step 2: Convert to fraction form
    353,954.79/530,638.25 = 140,591.07/x
  3. Step 3: Cross multiply
    353,954.79x = 530,638.25 × 140,591.07
  4. Step 4: Simplify right side
    353,954.79x = 74,602,998,647.47
  5. Step 5: Solve for x
    x = 74,602,998,647.47/353,954.79
  6. Step 6: Final answer
    x = 210,769.85

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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.