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Finding the Fourth Proportional to 426,818.85, 589,132.74 and 281,730.52

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Solution

The fourth proportional to 426,818.85, 589,132.74 and 281,730.52 is: 388,869.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,818.85 : 589,132.74 = 281,730.52 : x
  2. Step 2: Convert to fraction form
    426,818.85/589,132.74 = 281,730.52/x
  3. Step 3: Cross multiply
    426,818.85x = 589,132.74 × 281,730.52
  4. Step 4: Simplify right side
    426,818.85x = 165,976,673,189.23
  5. Step 5: Solve for x
    x = 165,976,673,189.23/426,818.85
  6. Step 6: Final answer
    x = 388,869.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.