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Finding the Fourth Proportional to 393,320.64, 589,981.28 and 168,535.28

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Solution

The fourth proportional to 393,320.64, 589,981.28 and 168,535.28 is: 252,803.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,320.64 : 589,981.28 = 168,535.28 : x
  2. Step 2: Convert to fraction form
    393,320.64/589,981.28 = 168,535.28/x
  3. Step 3: Cross multiply
    393,320.64x = 589,981.28 × 168,535.28
  4. Step 4: Simplify right side
    393,320.64x = 99,432,660,219.56
  5. Step 5: Solve for x
    x = 99,432,660,219.56/393,320.64
  6. Step 6: Final answer
    x = 252,803.06

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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.