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Finding the Fourth Proportional to 275,271.60, 412,810.20 and 97,784.40

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Solution

The fourth proportional to 275,271.60, 412,810.20 and 97,784.40 is: 146,642.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,271.60 : 412,810.20 = 97,784.40 : x
  2. Step 2: Convert to fraction form
    275,271.60/412,810.20 = 97,784.40/x
  3. Step 3: Cross multiply
    275,271.60x = 412,810.20 × 97,784.40
  4. Step 4: Simplify right side
    275,271.60x = 40,366,397,720.88
  5. Step 5: Solve for x
    x = 40,366,397,720.88/275,271.60
  6. Step 6: Final answer
    x = 146,642.07

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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.