Home / 272,545.20-408,817.80-213,431.40

Finding the Fourth Proportional to 272,545.20, 408,817.80 and 213,431.40

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Solution

The fourth proportional to 272,545.20, 408,817.80 and 213,431.40 is: 320,147.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,545.20 : 408,817.80 = 213,431.40 : x
  2. Step 2: Convert to fraction form
    272,545.20/408,817.80 = 213,431.40/x
  3. Step 3: Cross multiply
    272,545.20x = 408,817.80 × 213,431.40
  4. Step 4: Simplify right side
    272,545.20x = 87,254,555,398.92
  5. Step 5: Solve for x
    x = 87,254,555,398.92/272,545.20
  6. Step 6: Final answer
    x = 320,147.10

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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.