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Finding the Fourth Proportional to 272,807.20, 409,210.80 and 188,826.40

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Solution

The fourth proportional to 272,807.20, 409,210.80 and 188,826.40 is: 283,239.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,807.20 : 409,210.80 = 188,826.40 : x
  2. Step 2: Convert to fraction form
    272,807.20/409,210.80 = 188,826.40/x
  3. Step 3: Cross multiply
    272,807.20x = 409,210.80 × 188,826.40
  4. Step 4: Simplify right side
    272,807.20x = 77,269,802,205.12
  5. Step 5: Solve for x
    x = 77,269,802,205.12/272,807.20
  6. Step 6: Final answer
    x = 283,239.60

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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.