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Finding the Fourth Proportional to 353,698.28, 530,227.42 and 129,006.08

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Solution

The fourth proportional to 353,698.28, 530,227.42 and 129,006.08 is: 193,392.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,698.28 : 530,227.42 = 129,006.08 : x
  2. Step 2: Convert to fraction form
    353,698.28/530,227.42 = 129,006.08/x
  3. Step 3: Cross multiply
    353,698.28x = 530,227.42 × 129,006.08
  4. Step 4: Simplify right side
    353,698.28x = 68,402,560,962.71
  5. Step 5: Solve for x
    x = 68,402,560,962.71/353,698.28
  6. Step 6: Final answer
    x = 193,392.40

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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.