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Finding the Fourth Proportional to 393,718.80, 590,557.56 and 113,225.04

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Solution

The fourth proportional to 393,718.80, 590,557.56 and 113,225.04 is: 169,831.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,718.80 : 590,557.56 = 113,225.04 : x
  2. Step 2: Convert to fraction form
    393,718.80/590,557.56 = 113,225.04/x
  3. Step 3: Cross multiply
    393,718.80x = 590,557.56 × 113,225.04
  4. Step 4: Simplify right side
    393,718.80x = 66,865,903,353.30
  5. Step 5: Solve for x
    x = 66,865,903,353.30/393,718.80
  6. Step 6: Final answer
    x = 169,831.62

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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.