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Finding the Fourth Proportional to 489,267.80, 733,901.70 and 208,813.40

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Solution

The fourth proportional to 489,267.80, 733,901.70 and 208,813.40 is: 313,220.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,267.80 : 733,901.70 = 208,813.40 : x
  2. Step 2: Convert to fraction form
    489,267.80/733,901.70 = 208,813.40/x
  3. Step 3: Cross multiply
    489,267.80x = 733,901.70 × 208,813.40
  4. Step 4: Simplify right side
    489,267.80x = 153,248,509,242.78
  5. Step 5: Solve for x
    x = 153,248,509,242.78/489,267.80
  6. Step 6: Final answer
    x = 313,220.10

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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.