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Finding the Fourth Proportional to 228,866.80, 343,300.20 and 216,036.40

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Solution

The fourth proportional to 228,866.80, 343,300.20 and 216,036.40 is: 324,054.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,866.80 : 343,300.20 = 216,036.40 : x
  2. Step 2: Convert to fraction form
    228,866.80/343,300.20 = 216,036.40/x
  3. Step 3: Cross multiply
    228,866.80x = 343,300.20 × 216,036.40
  4. Step 4: Simplify right side
    228,866.80x = 74,165,339,327.28
  5. Step 5: Solve for x
    x = 74,165,339,327.28/228,866.80
  6. Step 6: Final answer
    x = 324,054.60

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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.