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Finding the Fourth Proportional to 482,815.80, 724,220.10 and 145,855.80

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Solution

The fourth proportional to 482,815.80, 724,220.10 and 145,855.80 is: 218,782.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,815.80 : 724,220.10 = 145,855.80 : x
  2. Step 2: Convert to fraction form
    482,815.80/724,220.10 = 145,855.80/x
  3. Step 3: Cross multiply
    482,815.80x = 724,220.10 × 145,855.80
  4. Step 4: Simplify right side
    482,815.80x = 105,631,702,061.58
  5. Step 5: Solve for x
    x = 105,631,702,061.58/482,815.80
  6. Step 6: Final answer
    x = 218,782.61

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1.5x scale

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.