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Finding the Fourth Proportional to 482,870.80, 724,302.60 and 145,910.80

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Solution

The fourth proportional to 482,870.80, 724,302.60 and 145,910.80 is: 218,865.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,870.80 : 724,302.60 = 145,910.80 : x
  2. Step 2: Convert to fraction form
    482,870.80/724,302.60 = 145,910.80/x
  3. Step 3: Cross multiply
    482,870.80x = 724,302.60 × 145,910.80
  4. Step 4: Simplify right side
    482,870.80x = 105,683,571,808.08
  5. Step 5: Solve for x
    x = 105,683,571,808.08/482,870.80
  6. Step 6: Final answer
    x = 218,865.11

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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.