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Finding the Fourth Proportional to 489,265.80, 733,898.70 and 208,811.40

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Solution

The fourth proportional to 489,265.80, 733,898.70 and 208,811.40 is: 313,217.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,265.80 : 733,898.70 = 208,811.40 : x
  2. Step 2: Convert to fraction form
    489,265.80/733,898.70 = 208,811.40/x
  3. Step 3: Cross multiply
    489,265.80x = 733,898.70 × 208,811.40
  4. Step 4: Simplify right side
    489,265.80x = 153,246,415,005.18
  5. Step 5: Solve for x
    x = 153,246,415,005.18/489,265.80
  6. Step 6: Final answer
    x = 313,217.10

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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.