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Finding the Fourth Proportional to 228,810.20, 343,215.30 and 213,258.20

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Solution

The fourth proportional to 228,810.20, 343,215.30 and 213,258.20 is: 319,887.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,810.20 : 343,215.30 = 213,258.20 : x
  2. Step 2: Convert to fraction form
    228,810.20/343,215.30 = 213,258.20/x
  3. Step 3: Cross multiply
    228,810.20x = 343,215.30 × 213,258.20
  4. Step 4: Simplify right side
    228,810.20x = 73,193,477,090.46
  5. Step 5: Solve for x
    x = 73,193,477,090.46/228,810.20
  6. Step 6: Final answer
    x = 319,887.30

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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.