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Finding the Fourth Proportional to 2,187,477.20, 3,281,215.80 and 2,187,477.20

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Solution

The fourth proportional to 2,187,477.20, 3,281,215.80 and 2,187,477.20 is: 3,281,215.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187,477.20 : 3,281,215.80 = 2,187,477.20 : x
  2. Step 2: Convert to fraction form
    2,187,477.20/3,281,215.80 = 2,187,477.20/x
  3. Step 3: Cross multiply
    2,187,477.20x = 3,281,215.80 × 2,187,477.20
  4. Step 4: Simplify right side
    2,187,477.20x = 7,177,584,750,779.76
  5. Step 5: Solve for x
    x = 7,177,584,750,779.76/2,187,477.20
  6. Step 6: Final answer
    x = 3,281,215.80

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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.