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Finding the Fourth Proportional to 228,666.80, 343,000.20 and 215,836.40

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Solution

The fourth proportional to 228,666.80, 343,000.20 and 215,836.40 is: 323,754.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,666.80 : 343,000.20 = 215,836.40 : x
  2. Step 2: Convert to fraction form
    228,666.80/343,000.20 = 215,836.40/x
  3. Step 3: Cross multiply
    228,666.80x = 343,000.20 × 215,836.40
  4. Step 4: Simplify right side
    228,666.80x = 74,031,928,367.28
  5. Step 5: Solve for x
    x = 74,031,928,367.28/228,666.80
  6. Step 6: Final answer
    x = 323,754.60

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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.