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Finding the Fourth Proportional to 393,509.16, 590,299.92 and 168,818.94

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Solution

The fourth proportional to 393,509.16, 590,299.92 and 168,818.94 is: 253,243.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,509.16 : 590,299.92 = 168,818.94 : x
  2. Step 2: Convert to fraction form
    393,509.16/590,299.92 = 168,818.94/x
  3. Step 3: Cross multiply
    393,509.16x = 590,299.92 × 168,818.94
  4. Step 4: Simplify right side
    393,509.16x = 99,653,806,776.48
  5. Step 5: Solve for x
    x = 99,653,806,776.48/393,509.16
  6. Step 6: Final answer
    x = 253,243.93

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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.