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Finding the Fourth Proportional to 307,657.44, 424,566.42 and 171,689.94

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Solution

The fourth proportional to 307,657.44, 424,566.42 and 171,689.94 is: 236,931.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,657.44 : 424,566.42 = 171,689.94 : x
  2. Step 2: Convert to fraction form
    307,657.44/424,566.42 = 171,689.94/x
  3. Step 3: Cross multiply
    307,657.44x = 424,566.42 × 171,689.94
  4. Step 4: Simplify right side
    307,657.44x = 72,893,783,175.81
  5. Step 5: Solve for x
    x = 72,893,783,175.81/307,657.44
  6. Step 6: Final answer
    x = 236,931.64

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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.