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Finding the Fourth Proportional to 393,041.16, 589,559.22 and 112,559.40

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Solution

The fourth proportional to 393,041.16, 589,559.22 and 112,559.40 is: 168,838.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,041.16 : 589,559.22 = 112,559.40 : x
  2. Step 2: Convert to fraction form
    393,041.16/589,559.22 = 112,559.40/x
  3. Step 3: Cross multiply
    393,041.16x = 589,559.22 × 112,559.40
  4. Step 4: Simplify right side
    393,041.16x = 66,360,432,067.67
  5. Step 5: Solve for x
    x = 66,360,432,067.67/393,041.16
  6. Step 6: Final answer
    x = 168,838.38

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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.