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Finding the Fourth Proportional to 358,886.80, 537,293.40 and 218,918.80

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Solution

The fourth proportional to 358,886.80, 537,293.40 and 218,918.80 is: 327,745.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,886.80 : 537,293.40 = 218,918.80 : x
  2. Step 2: Convert to fraction form
    358,886.80/537,293.40 = 218,918.80/x
  3. Step 3: Cross multiply
    358,886.80x = 537,293.40 × 218,918.80
  4. Step 4: Simplify right side
    358,886.80x = 117,623,626,375.92
  5. Step 5: Solve for x
    x = 117,623,626,375.92/358,886.80
  6. Step 6: Final answer
    x = 327,745.76

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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.