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Finding the Fourth Proportional to 213,417.92, 320,126.90 and 55,645.94

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Solution

The fourth proportional to 213,417.92, 320,126.90 and 55,645.94 is: 83,468.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,417.92 : 320,126.90 = 55,645.94 : x
  2. Step 2: Convert to fraction form
    213,417.92/320,126.90 = 55,645.94/x
  3. Step 3: Cross multiply
    213,417.92x = 320,126.90 × 55,645.94
  4. Step 4: Simplify right side
    213,417.92x = 17,813,760,390.92
  5. Step 5: Solve for x
    x = 17,813,760,390.92/213,417.92
  6. Step 6: Final answer
    x = 83,468.91

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1.5x scale

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.