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Finding the Fourth Proportional to 343,243.20, 514,864.80 and 284,923.20

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Solution

The fourth proportional to 343,243.20, 514,864.80 and 284,923.20 is: 427,384.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,243.20 : 514,864.80 = 284,923.20 : x
  2. Step 2: Convert to fraction form
    343,243.20/514,864.80 = 284,923.20/x
  3. Step 3: Cross multiply
    343,243.20x = 514,864.80 × 284,923.20
  4. Step 4: Simplify right side
    343,243.20x = 146,696,926,383.36
  5. Step 5: Solve for x
    x = 146,696,926,383.36/343,243.20
  6. Step 6: Final answer
    x = 427,384.80

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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.