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Finding the Fourth Proportional to 479,071.98, 718,399.36 and 137,440.04

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Solution

The fourth proportional to 479,071.98, 718,399.36 and 137,440.04 is: 206,100.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,071.98 : 718,399.36 = 137,440.04 : x
  2. Step 2: Convert to fraction form
    479,071.98/718,399.36 = 137,440.04/x
  3. Step 3: Cross multiply
    479,071.98x = 718,399.36 × 137,440.04
  4. Step 4: Simplify right side
    479,071.98x = 98,736,832,838.78
  5. Step 5: Solve for x
    x = 98,736,832,838.78/479,071.98
  6. Step 6: Final answer
    x = 206,100.20

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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.