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Finding the Fourth Proportional to 393,301.18, 589,950.08 and 108,990.91

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Solution

The fourth proportional to 393,301.18, 589,950.08 and 108,990.91 is: 163,485.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,301.18 : 589,950.08 = 108,990.91 : x
  2. Step 2: Convert to fraction form
    393,301.18/589,950.08 = 108,990.91/x
  3. Step 3: Cross multiply
    393,301.18x = 589,950.08 × 108,990.91
  4. Step 4: Simplify right side
    393,301.18x = 64,299,192,579.07
  5. Step 5: Solve for x
    x = 64,299,192,579.07/393,301.18
  6. Step 6: Final answer
    x = 163,485.89

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1.5x scale

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.