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Finding the Fourth Proportional to 228,216.80, 342,325.20 and 213,345.20

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Solution

The fourth proportional to 228,216.80, 342,325.20 and 213,345.20 is: 320,017.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,216.80 : 342,325.20 = 213,345.20 : x
  2. Step 2: Convert to fraction form
    228,216.80/342,325.20 = 213,345.20/x
  3. Step 3: Cross multiply
    228,216.80x = 342,325.20 × 213,345.20
  4. Step 4: Simplify right side
    228,216.80x = 73,033,438,259.04
  5. Step 5: Solve for x
    x = 73,033,438,259.04/228,216.80
  6. Step 6: Final answer
    x = 320,017.80

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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.