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Finding the Fourth Proportional to 353,673.60, 530,510.40 and 143,318.40

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Solution

The fourth proportional to 353,673.60, 530,510.40 and 143,318.40 is: 214,977.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,673.60 : 530,510.40 = 143,318.40 : x
  2. Step 2: Convert to fraction form
    353,673.60/530,510.40 = 143,318.40/x
  3. Step 3: Cross multiply
    353,673.60x = 530,510.40 × 143,318.40
  4. Step 4: Simplify right side
    353,673.60x = 76,031,901,711.36
  5. Step 5: Solve for x
    x = 76,031,901,711.36/353,673.60
  6. Step 6: Final answer
    x = 214,977.60

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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.