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Finding the Fourth Proportional to 487,718.44, 731,074.82 and 203,574.34

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Solution

The fourth proportional to 487,718.44, 731,074.82 and 203,574.34 is: 305,151.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,718.44 : 731,074.82 = 203,574.34 : x
  2. Step 2: Convert to fraction form
    487,718.44/731,074.82 = 203,574.34/x
  3. Step 3: Cross multiply
    487,718.44x = 731,074.82 × 203,574.34
  4. Step 4: Simplify right side
    487,718.44x = 148,828,071,811.94
  5. Step 5: Solve for x
    x = 148,828,071,811.94/487,718.44
  6. Step 6: Final answer
    x = 305,151.62

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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.