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Finding the Fourth Proportional to 308,920.60, 463,337.70 and 98,579.80

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Solution

The fourth proportional to 308,920.60, 463,337.70 and 98,579.80 is: 147,855.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,920.60 : 463,337.70 = 98,579.80 : x
  2. Step 2: Convert to fraction form
    308,920.60/463,337.70 = 98,579.80/x
  3. Step 3: Cross multiply
    308,920.60x = 463,337.70 × 98,579.80
  4. Step 4: Simplify right side
    308,920.60x = 45,675,737,798.46
  5. Step 5: Solve for x
    x = 45,675,737,798.46/308,920.60
  6. Step 6: Final answer
    x = 147,855.91

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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.