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Finding the Fourth Proportional to 353,628.98, 530,448.35 and 100,909.40

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Solution

The fourth proportional to 353,628.98, 530,448.35 and 100,909.40 is: 151,365.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,628.98 : 530,448.35 = 100,909.40 : x
  2. Step 2: Convert to fraction form
    353,628.98/530,448.35 = 100,909.40/x
  3. Step 3: Cross multiply
    353,628.98x = 530,448.35 × 100,909.40
  4. Step 4: Simplify right side
    353,628.98x = 53,527,221,572.70
  5. Step 5: Solve for x
    x = 53,527,221,572.70/353,628.98
  6. Step 6: Final answer
    x = 151,365.48

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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.