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Finding the Fourth Proportional to 353,807.80, 530,711.70 and 132,278.20

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Solution

The fourth proportional to 353,807.80, 530,711.70 and 132,278.20 is: 198,417.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,807.80 : 530,711.70 = 132,278.20 : x
  2. Step 2: Convert to fraction form
    353,807.80/530,711.70 = 132,278.20/x
  3. Step 3: Cross multiply
    353,807.80x = 530,711.70 × 132,278.20
  4. Step 4: Simplify right side
    353,807.80x = 70,201,588,394.94
  5. Step 5: Solve for x
    x = 70,201,588,394.94/353,807.80
  6. Step 6: Final answer
    x = 198,417.30

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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.