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Finding the Fourth Proportional to 353,677.60, 530,516.40 and 143,322.40

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Solution

The fourth proportional to 353,677.60, 530,516.40 and 143,322.40 is: 214,983.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,677.60 : 530,516.40 = 143,322.40 : x
  2. Step 2: Convert to fraction form
    353,677.60/530,516.40 = 143,322.40/x
  3. Step 3: Cross multiply
    353,677.60x = 530,516.40 × 143,322.40
  4. Step 4: Simplify right side
    353,677.60x = 76,034,883,687.36
  5. Step 5: Solve for x
    x = 76,034,883,687.36/353,677.60
  6. Step 6: Final answer
    x = 214,983.60

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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.