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Finding the Fourth Proportional to 309,537.92, 427,166.78 and 180,472.79

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Solution

The fourth proportional to 309,537.92, 427,166.78 and 180,472.79 is: 249,055.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,537.92 : 427,166.78 = 180,472.79 : x
  2. Step 2: Convert to fraction form
    309,537.92/427,166.78 = 180,472.79/x
  3. Step 3: Cross multiply
    309,537.92x = 427,166.78 × 180,472.79
  4. Step 4: Simplify right side
    309,537.92x = 77,091,977,543.72
  5. Step 5: Solve for x
    x = 77,091,977,543.72/309,537.92
  6. Step 6: Final answer
    x = 249,055.04

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1.5x scale

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.