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Finding the Fourth Proportional to 393,117.30, 589,384.35 and 168,293.70

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Solution

The fourth proportional to 393,117.30, 589,384.35 and 168,293.70 is: 252,315.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,117.30 : 589,384.35 = 168,293.70 : x
  2. Step 2: Convert to fraction form
    393,117.30/589,384.35 = 168,293.70/x
  3. Step 3: Cross multiply
    393,117.30x = 589,384.35 × 168,293.70
  4. Step 4: Simplify right side
    393,117.30x = 99,189,672,983.60
  5. Step 5: Solve for x
    x = 99,189,672,983.60/393,117.30
  6. Step 6: Final answer
    x = 252,315.72

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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.